I have been trying to build something similar to the Cobra Tag (Check out the video). I have written a prototype android app which uses SPP to connect to a bluetooth module and exchange commands, which is working great. But, i have a few queries
- From what appears, does Cobra Tag also use SPP or any proprietary custom profile ?
- I am able to connect to a single device over SPP and do the data exchange, how do i go about connecting to multiple devices simultaneously. Does Bluetooth/SPP support that ?
- Should i be using any other bluetooth profile/protocol which would be more efficient for this purpose ?