Credit Cards has a spending limit, usually 2x the monthly pay
per month. You can request for the limit to be raised when you need
to.
Debit Cards also as a preset limit usually $2000 or pegged to 2x
your monthly pay, whichever is higher. Otherwise, your bank
account, will be empty if you lose your debit card and failed to
report it in time.
The signature, as a security feature, for both type of cards is
next to useless.
