Remote Controls and Card embedded antennas

Anyone knows anything about reading/capturing the signals from a remote, with the idea of copying them and replicating the remote control? It would come in hande at home, TV remotes get dead a lot.

And what about those cards with a multi-turn antenna embebed in it, with what i think is a small IC? Like those for transportation. I find that very interesting, is it possible to interact with it? Read, write?

My very best regards.

For infrared you could use Arduino-IRremote
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aimaty:
And what about those cards with a multi-turn antenna embebed in it, with what i think is a small IC? Like those for transportation.

If never seen any of them used for transportation of anything but information, :o
but it could be something in the 2.4GHz range, bluetooth, WiFi, NRF24L01, ...

Are you talking about RFID tags? Post a picture of what you mean.