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Chip itself measures 5x5mm or less. Some cards (e.g. MFF SIM cards for M2M) are already 5x6mm.
With "contactless" cards you don't need to take them out of the wallet (let alone wear them on your neck - but "wearable" form factor is a sound proposition indeed).
Biometrics et al does not combat CNP fraud IF your card cannot "talk" to your issuer.
Innovation in cards technology is growing in leaps, not in steps. If this is the good news, even more better is that the innovation is helping not just the issuers and banks but also card-users. Post introduction of chip, Card frauds in France have fallen
by 80%. Fraud losses in UK too decreased by 40%. The bottom line is that there is a rush to adopt the technology – whether fuelled by convenience, value or the Oct 2015 deadline!
Can you throw more light on how chip-and-PIN and biometrics cards can counter CNP fraud?
Prinicpal Consultant Product Strategy
Infosys Technologies Limited
24 Aug 2012