Strange fob with my car

[A8 Ian]

My D4 came with the usual 2 keys plus plastic key ... but it also came with what I can only describe as two giant SD cards in similar packages to SD cards, they have one single button on and a constant flashing light (red led)

The car was fitted with a cobra tracking system from factory.. but no idea what the hell the little fobs are.. and no sadly they are not Auxiliary heating

I have no idea how to take a picture and upload it's a tad beyond my skills

Any ideas?

Thanks
Ian