Sign Your Card. The whole point of a signature is not that it is a secret symbol known only to you, but that only you can accurately duplicate it on command. It is not that hard for anyone can see a copy of your signature from public records, from a canceled check, and of course, from the credit card receipts you must sign.
A National Stock Number (NSN), as it is known in the US, or a NATO Stock Number, is a 13-digit numeric code identifying all the standardized material items of supply as they have been recognized by all NATO countries including the US Department of Defense.
The NSF is a non-profit testing organization that certifies materials used in the construction of products for the food service industry. The NSF tests materials such as the stainless steel and hardwoods used in products like John Boos cutting boards and Shun cutlery. Many products must receive this type of certification in order to be accepted for use by the food service industry.