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jump to replies> Pay for rides on all transit services with cash value on your Clipper card.
> Maximum allowed value is $255.
huh, what a weirdly specific value /s
(although, i'm kinda curious about the binary representation now, considering they can go negative)
6 replies
back to top@nyanotech before the advent of connected vehicles, a lot of these bus/tram e-pass cards just stored the balance on the card with nothing so much as a checksum. I once tweaked my balance down by a penny to verify that it worked.
not super smart to try to defraud the operators, though, because the travel records are uploaded at the station and they can audit them vs. top-up records. doesn't take much to get caught, and I heard stories of big fines and prosecution.
@gsuberland @nyanotech a lot of them still do this, but with ostensibly more secure *cards* (i.e. the thing that prevents you from tampering with your balance is the NFC chip's tamper-resistance (at least in offline mode))
@mimir @gsuberland @nyanotech Im guessing this is just so if the servers go down people don't get stranded without transit?
@mimir @gsuberland @nyanotech especially in cases where the terminals are on a moving vehicle without a stable network connection
@cinebox @mimir @gsuberland yeah, clipper is stored-value (and a lot of the bus readers are still offline afaik)
@nyanotech @mimir @gsuberland huh, that explains why the apple wallet version can only live on one device at a time