iso format/standard is not only thickness but also flexibility .... even some proximity (iso 14443) cards have had problem in the past with flexibiity standards because flex tests would stress the coils in the plastic and cause the connection to the chip to break.
[EMAIL PROTECTED] on 8/31/2002 4:57 arm wrote: Contactless smart cards typically have coils in the card and the magnetic field is generated by the reader. Capacitive coupling is an alternative but requires more precise alignment and thus doesn't really provide a proximity/vicinity card like inductive coupling does. On-board batteries are hard to fit on an ISO-format smart card but maybe with the new ultra-thin batteries that's no longer the case. Batteries are perhaps more suitable for a CD. --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
