How to achieve 1 meter accuracy with Android Was: Re: Dropgang vulnerabilities

Steve Kinney admin at
Sun Feb 24 12:27:43 PST 2019

On 2/24/19 2:01 AM, jim bell wrote:
> [partial quote begins]
> Recent changes in hardware and standards make one-meter accuracy
> possible, in some cases as soon as this year. The transcript of a talk
> given to Android developers earlier this year, this article gives a
> short overview of location in smartphones, introduces Wi-Fi round-trip
> time technology and standards, and then explains the Wi-Fi application
> programming interfaces.
> /By Frank van Diggelen, Roy Want and Wei Wang, Android Location, Google/

That's very relevant indeed - one-meter accuracy would remove the need
to put any kind of 'flag' on top of a dead drop container.  Without
retroreflectors or etc. marking packages, broad searches of likely drop
areas would not produce results worth paying for.  Also buyers would
have no need for a means of finding inconspicuous retroreflectors - just
a 'really good' mobile phone.

Still not "the perfect crime", but a much improved one.


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