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== Smartphone ==
My [[Samsung M910 Intercept]] runs down its battery in a few hours when using it as a GPS speedometer instead of just with [[Google Maps]]. Is this because, unlike dedicated GPS receivers, smartphones use a power hungry Software Defined Radio for GPS instead of more abstemious dedicated hardware? [[User:Jim.henderson|Jim.henderson]] ([[User talk:Jim.henderson|talk]]) 15:26, 5 March 2012 (UTC)
: No.[[User:Fgnievinski|Fgnievinski]] ([[User talk:Fgnievinski|talk]]) 00:11, 27 June 2014 (UTC)
== Re. legal concerns ==
Hi, it appears that under an obscure law relating to "ceiling" on GPS decoders it is illegal to use equipment
that circumvents or has the capability to circumvent the 15,000 feet restriction.
In principle this means that a GNSS software receiver must implement the same restriction by design or be classed
under the same category as "scanning receiver" as described in the Terrorism Act 2000.
<ref> https://gis.stackexchange.com/questions/19811/gps-module-without-velocity-or-altitude-limitations </ref>
This also means that an unauthorized software modification on existing equipment can also fall foul of the same
law if it removes restrictions on frequency coverage in addition to voiding the CE certification if present.
If memory serves the restriction includes both altitude and velocity. <!-- Template:Unsigned IP --><small class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/91.190.161.223|91.190.161.223]] ([[User talk:91.190.161.223#top|talk]]) 17:40, 4 April 2020 (UTC)</small> <!--Autosigned by SineBot-->
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