blog/Visualizing_GSM_radio_chatter_using_gr_gsm_and_Hopglass.html

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   6     <title>Petter Reinholdtsen: Visualizing GSM radio chatter using gr-gsm and Hopglass</title>
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  14  <h1>
  15      <a href="https://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Visualizing GSM radio chatter using gr-gsm and Hopglass</div>
  24       <div class="date">29th September 2017</div>
  25       <div class="body"><p>Every mobile phone announce its existence over radio to the nearby
  26 mobile cell towers.  And this radio chatter is available for anyone
  27 with a radio receiver capable of receiving them.  Details about the
  28 mobile phones with very good accuracy is of course collected by the
  29 phone companies, but this is not the topic of this blog post.  The
  30 mobile phone radio chatter make it possible to figure out when a cell
  31 phone is nearby, as it include the SIM card ID (IMSI).  By paying
  32 attention over time, one can see when a phone arrive and when it leave
  33 an area.  I believe it would be nice to make this information more
  34 available to the general public, to make more people aware of how
  35 their phones are announcing their whereabouts to anyone that care to
  36 listen.</p>
  37
  38 <p>I am very happy to report that we managed to get something
  39 visualizing this information up and running for
  40 <a href="http://norwaymakers.org/osf17">Oslo Skaperfestival 2017</a>
  41 (Oslo Makers Festival) taking place today and tomorrow at Deichmanske
  42 library.  The solution is based on the
  43 <a href="http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html">simple
  44 recipe for listening to GSM chatter</a> I posted a few days ago, and
  45 will show up at the stand of <a href="http://sonen.ifi.uio.no/">Åpen
  46 Sone from the Computer Science department of the University of
  47 Oslo</a>.  The presentation will show the nearby mobile phones (aka
  48 IMSIs) as dots in a web browser graph, with lines to the dot
  49 representing mobile base station it is talking to. It was working in
  50 the lab yesterday, and was moved into place this morning.</p>
  51
  52 <p>We set up a fairly powerful desktop machine using Debian
  53 Buster/Testing with several (five, I believe) RTL2838 DVB-T receivers
  54 connected and visualize the visible cell phone towers using an
  55 <a href="https://github.com/marlow925/hopglass">English version of
  56 Hopglass</a>.  A fairly powerfull machine is needed as the
  57 grgsm_livemon_headless processes from
  58 <a href="https://tracker.debian.org/pkg/gr-gsm">gr-gsm</a> converting
  59 the radio signal to data packages is quite CPU intensive.</p>
  60
  61 <p>The frequencies to listen to, are identified using a slightly
  62 patched scan-and-livemon (to set the --args values for each receiver),
  63 and the Hopglass data is generated using the
  64 <a href="https://github.com/petterreinholdtsen/IMSI-catcher/tree/meshviewer-output">patches
  65 in my meshviewer-output branch</a>.  For some reason we could not get
  66 more than four SDRs working.  There is also a geographical map trying
  67 to show the location of the base stations, but I believe their
  68 coordinates are hardcoded to some random location in Germany, I
  69 believe.  The code should be replaced with code to look up location in
  70 a text file, a sqlite database or one of the online databases
  71 mentioned in
  72 <a href="https://github.com/Oros42/IMSI-catcher/issues/14">the github
  73 issue for the topic</a>.
  74
  75 <p>If this sound interesting, visit the stand at the festival!</p>
  76 </div>
  77
  78       <div class="tags">Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="https://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.</div>
  79
  80
  81     </div>
  82
  83
  84
  85
  86     <div id="sidebar">
  87
  88
  89
  90 <h2>Archive</h2>
  91 <ul>
  92
  93 <li>2023
  94 <ul>
  95
  96 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/01/">January (3)</a></li>
  97
  98 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/02/">February (1)</a></li>
  99
 100 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/04/">April (2)</a></li>
 101
 102 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/05/">May (3)</a></li>
 103
 104 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/06/">June (1)</a></li>
 105
 106 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/08/">August (1)</a></li>
 107
 108 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/09/">September (1)</a></li>
 109
 110 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/10/">October (1)</a></li>
 111
 112 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/11/">November (4)</a></li>
 113
 114 </ul></li>
 115
 116 <li>2022
 117 <ul>
 118
 119 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/02/">February (1)</a></li>
 120
 121 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/03/">March (3)</a></li>
 122
 123 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/04/">April (2)</a></li>
 124
 125 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/06/">June (2)</a></li>
 126
 127 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/07/">July (1)</a></li>
 128
 129 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/09/">September (1)</a></li>
 130
 131 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/10/">October (1)</a></li>
 132
 133 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/12/">December (1)</a></li>
 134
 135 </ul></li>
 136
 137 <li>2021
 138 <ul>
 139
 140 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/01/">January (2)</a></li>
 141
 142 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/02/">February (1)</a></li>
 143
 144 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/05/">May (1)</a></li>
 145
 146 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/06/">June (1)</a></li>
 147
 148 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/07/">July (3)</a></li>
 149
 150 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/08/">August (1)</a></li>
 151
 152 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/09/">September (1)</a></li>
 153
 154 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/10/">October (1)</a></li>
 155
 156 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/12/">December (1)</a></li>
 157
 158 </ul></li>
 159
 160 <li>2020
 161 <ul>
 162
 163 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/02/">February (2)</a></li>
 164
 165 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/03/">March (2)</a></li>
 166
 167 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/04/">April (2)</a></li>
 168
 169 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/05/">May (3)</a></li>
 170
 171 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/06/">June (2)</a></li>
 172
 173 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/07/">July (1)</a></li>
 174
 175 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/09/">September (1)</a></li>
 176
 177 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/10/">October (1)</a></li>
 178
 179 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/11/">November (1)</a></li>
 180
 181 </ul></li>
 182
 183 <li>2019
 184 <ul>
 185
 186 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/01/">January (4)</a></li>
 187
 188 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/02/">February (3)</a></li>
 189
 190 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/03/">March (3)</a></li>
 191
 192 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/05/">May (2)</a></li>
 193
 194 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/06/">June (5)</a></li>
 195
 196 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/07/">July (2)</a></li>
 197
 198 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/08/">August (1)</a></li>
 199
 200 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/09/">September (1)</a></li>
 201
 202 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/11/">November (1)</a></li>
 203
 204 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/12/">December (4)</a></li>
 205
 206 </ul></li>
 207
 208 <li>2018
 209 <ul>
 210
 211 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 212
 213 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 214
 215 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 216
 217 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 218
 219 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 220
 221 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 222
 223 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 224
 225 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 226
 227 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 228
 229 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/11/">November (2)</a></li>
 230
 231 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/12/">December (4)</a></li>
 232
 233 </ul></li>
 234
 235 <li>2017
 236 <ul>
 237
 238 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 239
 240 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 241
 242 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 243
 244 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 245
 246 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 247
 248 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 249
 250 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 251
 252 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 253
 254 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 255
 256 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 257
 258 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 259
 260 </ul></li>
 261
 262 <li>2016
 263 <ul>
 264
 265 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 266
 267 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 268
 269 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 270
 271 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 272
 273 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 274
 275 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 276
 277 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 278
 279 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 280
 281 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 282
 283 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 284
 285 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 286
 287 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 288
 289 </ul></li>
 290
 291 <li>2015
 292 <ul>
 293
 294 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 295
 296 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 297
 298 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 299
 300 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 301
 302 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 303
 304 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 305
 306 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 307
 308 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 309
 310 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 311
 312 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 313
 314 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 315
 316 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 317
 318 </ul></li>
 319
 320 <li>2014
 321 <ul>
 322
 323 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 324
 325 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 326
 327 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 328
 329 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 330
 331 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 332
 333 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 334
 335 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 336
 337 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 338
 339 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 340
 341 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 342
 343 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 344
 345 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 346
 347 </ul></li>
 348
 349 <li>2013
 350 <ul>
 351
 352 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 353
 354 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 355
 356 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 357
 358 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 359
 360 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 361
 362 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 363
 364 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 365
 366 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 367
 368 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 369
 370 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 371
 372 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 373
 374 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 375
 376 </ul></li>
 377
 378 <li>2012
 379 <ul>
 380
 381 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 382
 383 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 384
 385 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 386
 387 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 388
 389 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 390
 391 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 392
 393 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 394
 395 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 396
 397 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 398
 399 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 400
 401 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 402
 403 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 404
 405 </ul></li>
 406
 407 <li>2011
 408 <ul>
 409
 410 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 411
 412 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 413
 414 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 415
 416 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 417
 418 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 419
 420 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 421
 422 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 423
 424 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 425
 426 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 427
 428 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 429
 430 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 431
 432 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 433
 434 </ul></li>
 435
 436 <li>2010
 437 <ul>
 438
 439 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 440
 441 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 442
 443 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 444
 445 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 446
 447 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 448
 449 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 450
 451 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 452
 453 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 454
 455 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 456
 457 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 458
 459 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 460
 461 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 462
 463 </ul></li>
 464
 465 <li>2009
 466 <ul>
 467
 468 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 469
 470 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 471
 472 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 473
 474 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 475
 476 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 477
 478 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 479
 480 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 481
 482 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 483
 484 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 485
 486 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 487
 488 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 489
 490 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 491
 492 </ul></li>
 493
 494 <li>2008
 495 <ul>
 496
 497 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 498
 499 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 500
 501 </ul></li>
 502
 503 </ul>
 504
 505
 506
 507 <h2>Tags</h2>
 508 <ul>
 509
 510  <li><a href="https://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (19)</a></li>
 511
 512  <li><a href="https://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 513
 514  <li><a href="https://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 515
 516  <li><a href="https://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 517
 518  <li><a href="https://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 519
 520  <li><a href="https://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (12)</a></li>
 521
 522  <li><a href="https://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 523
 524  <li><a href="https://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 525
 526  <li><a href="https://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (3)</a></li>
 527
 528  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (197)</a></li>
 529
 530  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
 531
 532  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (9)</a></li>
 533
 534  <li><a href="https://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
 535
 536  <li><a href="https://people.skolelinux.org/pere/blog/tags/dld">dld (18)</a></li>
 537
 538  <li><a href="https://people.skolelinux.org/pere/blog/tags/docbook">docbook (32)</a></li>
 539
 540  <li><a href="https://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 541
 542  <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (454)</a></li>
 543
 544  <li><a href="https://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 545
 546  <li><a href="https://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (14)</a></li>
 547
 548  <li><a href="https://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (34)</a></li>
 549
 550  <li><a href="https://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
 551
 552  <li><a href="https://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (20)</a></li>
 553
 554  <li><a href="https://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
 555
 556  <li><a href="https://people.skolelinux.org/pere/blog/tags/intervju">intervju (43)</a></li>
 557
 558  <li><a href="https://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
 559
 560  <li><a href="https://people.skolelinux.org/pere/blog/tags/kart">kart (23)</a></li>
 561
 562  <li><a href="https://people.skolelinux.org/pere/blog/tags/kodi">kodi (6)</a></li>
 563
 564  <li><a href="https://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
 565
 566  <li><a href="https://people.skolelinux.org/pere/blog/tags/lego">lego (5)</a></li>
 567
 568  <li><a href="https://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
 569
 570  <li><a href="https://people.skolelinux.org/pere/blog/tags/linuxcnc">linuxcnc (5)</a></li>
 571
 572  <li><a href="https://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 573
 574  <li><a href="https://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 575
 576  <li><a href="https://people.skolelinux.org/pere/blog/tags/madewithcc">madewithcc (3)</a></li>
 577
 578  <li><a href="https://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 579
 580  <li><a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (46)</a></li>
 581
 582  <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (15)</a></li>
 583
 584  <li><a href="https://people.skolelinux.org/pere/blog/tags/noark5">noark5 (24)</a></li>
 585
 586  <li><a href="https://people.skolelinux.org/pere/blog/tags/norsk">norsk (323)</a></li>
 587
 588  <li><a href="https://people.skolelinux.org/pere/blog/tags/nuug">nuug (198)</a></li>
 589
 590  <li><a href="https://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (40)</a></li>
 591
 592  <li><a href="https://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 593
 594  <li><a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch (4)</a></li>
 595
 596  <li><a href="https://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (75)</a></li>
 597
 598  <li><a href="https://people.skolelinux.org/pere/blog/tags/personvern">personvern (114)</a></li>
 599
 600  <li><a href="https://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
 601
 602  <li><a href="https://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
 603
 604  <li><a href="https://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 605
 606  <li><a href="https://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
 607
 608  <li><a href="https://people.skolelinux.org/pere/blog/tags/robot">robot (17)</a></li>
 609
 610  <li><a href="https://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 611
 612  <li><a href="https://people.skolelinux.org/pere/blog/tags/ruter">ruter (7)</a></li>
 613
 614  <li><a href="https://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 615
 616  <li><a href="https://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (60)</a></li>
 617
 618  <li><a href="https://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 619
 620  <li><a href="https://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 621
 622  <li><a href="https://people.skolelinux.org/pere/blog/tags/standard">standard (75)</a></li>
 623
 624  <li><a href="https://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
 625
 626  <li><a href="https://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (14)</a></li>
 627
 628  <li><a href="https://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (65)</a></li>
 629
 630  <li><a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (5)</a></li>
 631
 632  <li><a href="https://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 633
 634  <li><a href="https://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 635
 636  <li><a href="https://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (20)</a></li>
 637
 638  <li><a href="https://people.skolelinux.org/pere/blog/tags/video">video (79)</a></li>
 639
 640  <li><a href="https://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 641
 642  <li><a href="https://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
 643
 644 </ul>
 645
 646
 647     </div>
 648     <p style="text-align: right">
 649  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 650 </p>
 651
 652   </body>
 653 </html>