Many countries have switched to "Chip & PIN" credit cards
The waitress comes to your table with a wireless card-reader and puts your card in it, then you enter your PIN
The card never leaves your sight and, unless you give out your PIN, even losing your card won't compromise it.
Not perfect, but a lot safer than having your card taken away or relying on the merchant matching your signature and asking for photo ID
Maybe we could all ask our banks when they will be introducing chip & pin?
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