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| -rw-r--r-- | site/faq/index.php | 25 |
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diff --git a/site/faq/index.php b/site/faq/index.php index d8d7f1b..06a0030 100644 --- a/site/faq/index.php +++ b/site/faq/index.php @@ -81,6 +81,7 @@ <li><a href="#firmware-sound">Sound card</a></li> <li><a href="#firmware-webcam">Web cam</a></li> <li><a href="#firmware-usbhost">USB host controller</a></li> + <li><a href="#firmware-wwan">WWAN firmware</a></li> </ul> </li> </ul> @@ -562,6 +563,30 @@ <p> <a href="#pagetop">Back to top of page</a> </p> + <h3 id="firmware-wwan">WWAN firmware <span class="ref">(<a href="#firmware-wwan">#firmware-wwan</a>)</span></h3> + <p> + Some laptops might have a simcard reader in them, with a card for handling WWAN, connecting to a 3g/4g (e.g. GSM) network. + This is the same technology used in mobile phones, for remote network access (e.g. internet). + </p> + <p> + NOTE: not to be confused with wifi. Wifi is a different technology, and entirely unrelated. + </p> + <p> + The baseband processor inside the WWAN chip will have its own embedded operating system, most likely proprietary. Use of this + technology also implies the same privacy issues as with mobile phones (remote tracking by the GSM network, by triangulating the signal). + </p> + <p> + On some laptops, these cards use USB (internally), so won't have DMA, but it's still a massive freedom and privacy issue. + If you have an internal WWAN chip/card, the libreboot project recommends that you disable and (ideally, if possible) physically + remove the hardware. If you absolutely must use this technology, an external USB dongle is much better because it can be + easily removed when you don't need it, thereby disabling any external entities from tracking your location. + </p> + <p> + Use of ethernet or wifi is recommended, as opposed to mobile networks, as these are generally much safer. + </p> + <p> + <a href="#pagetop">Back to top of page</a> + </p> </div> |