Oh yeah... compare this to the type of systems that have been repeatedly criticized...
In that case, we'd see stuff like money amounts being kept on the RFID chip and being trusted by the system as correct. In this case the system is very vulnerable and it would be worth someone's time to hack it as all they'd have to do was buy one train ride and they could modify the chip to give themselves as many rides as they wanted.
Not to mention with more complex data structures on the chip, there's an increased chance a hacker could implant a buffer overflow or similar exploit in his chip and bring down the entire system just by swiping his tag, for kicks. When you're just storing a single number the chances of that happening are still existent, but low, especially since again it sounds like the guy who designed the system has half a brain.
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Oh yeah... compare this to the type of systems that have been repeatedly criticized...
In that case, we'd see stuff like money amounts being kept on the RFID chip and being trusted by the system as correct. In this case the system is very vulnerable and it would be worth someone's time to hack it as all they'd have to do was buy one train ride and they could modify the chip to give themselves as many rides as they wanted.
Not to mention with more complex data structures on the chip, there's an increased chance a hacker could implant a buffer overflow or similar exploit in his chip and bring down the entire system just by swiping his tag, for kicks. When you're just storing a single number the chances of that happening are still existent, but low, especially since again it sounds like the guy who designed the system has half a brain.