3 ms·
It could be pretty independant from the main system too. They could wireshark the system's network connections to see if any rogue data is being sent and find n
by bonestamp2 7y ago
It could be pretty independant from the main system too. They could wireshark the system's network connections to see if any rogue data is being sent and find nothing.
But, what if the data is coming directly from the RFID readers? Depending on which boards they're using to read the rfid cards it could be a simple bluetooth broadcast that his phone picks up. His phone could constantly scan for bluetooth signals -- it wouldn't even need to make an actual bluetooth connection, the card data could be embedded in the advertising signal for anyone who knew the schema to pickup.
- pbhjpbhj 7y agoI was thinking that he could encode the already read card data in a modulation of the RFID transponder itself. If the signal were randomised then it would just look like a noisy power supply or something?