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you don't even require a connection, you can do an offline transaction, and it's still safer than a magnetic stripe, because duplicating a chip quickly is very
by nraynaud 12y ago
you don't even require a connection, you can do an offline transaction, and it's still safer than a magnetic stripe, because duplicating a chip quickly is very hard.
Calling the bank to get an authorization is just an optional step in the process.
- DavidJRobertson 12y agoTechnically it's possible for some cards to mandate online authorization (ie 'phoning' the bank).
- nraynaud 12y agooh, yeah true, Visa Electron and friends.