Then you punch up a six-digit code in this window here.

Only you know the six-digit code because you are in physical possession of the card.

Some online sites offer customers the ability to use a six-digit code which randomly changes every 30-60 seconds on a security token.

Jurors studied every presentation, identified only by six-digit codes.

On the back of Canon lenses is a six-digit code, which indicates where the lens was manufactured and when.

He started pecking out the six-digit code for room seventeen.

The device generates a new six-digit code every 60 seconds, which users will need to log in to their accounts.

Chang entered a six-digit code that George was to memorize and recite if asked.

In 1987, after a six-year hiatus, six-digit postal codes were ordered to be put into use.

The missiles can be fired only if the operator types into his computer control a six-digit code, called a 'permissive action link'.