In short what security features exist that I should look for in a smart card?
What physical features exist, which are important?
It appears smart cards may exhibit different levels of wear and tear from normal use, or that of harsh environments, or keeping it in a wallet. Ultimately this usage may cause card failure.
Is the card resistant to acid attacks to expose the inner chip?
Are there electrical characteristics that prevent deducing the private key through the timing of the signal?
If contactless, can the RFID be shut off for privacy & security reasons?
What logical security features exist, which are important?
- How many times was the private key accessed?