You're certainly right that there's nothing groundbreaking here; tons of people have done similar things. I just thought it was interesting to clone it onto a

You're certainly right that there's nothing groundbreaking here; tons of people have done similar things. I just thought it was interesting to clone it onto a random metrocard. However, the data is encrypted, you just don't need to care about the encryption when you're doing a bit-for-bit clone.