[OSM-talk] GeoQR - Geocoding Video with QRCodes

[simon at mungewell.org]

> Yes, definitely audio is the least processor-intensive way of getting a
> synchronised input.  I was mostly faffing.  I've seen FSK used, can APRS
> be
> recorded onto an audio track then?
>

APRS is a packet radio technique for HAMs which uses a standardised data
frame which is AFSK encoded to transmit on the 2m band, perfect for audio
recording.

http://en.wikipedia.org/wiki/Automatic_Packet_Reporting_System

I would suggest this, as there are many ways to encode and decode it. One
hardware encoder is the OpenTracker project:
http://www.argentdata.com/products/otplus.html

Cheers,
Simon