The GPS exemple uses a Arduino NG and serial communication with GSP module.
I was thinking about use Arduino BT and read information from external elements. My inicial question was: Do we have to implement services (device discovery, service discovery, profiles, security, etc) or just use BT as serial interface?
Another question: Is the communication secured?
I've bought my Arduino BT and it will arrive in few days... I'll try learn more praticing than in books
Thanks for your (all of you) help.