All group members age 15 and over must have two forms of identification (at least one with photo).

You should carry some form of identification at all times.

All other forms of foreign identification will not be accepted.

But these would not be valid as a form of federal identification.

"And I'll need to see some form of identification," the woman said.

How long have people been using prints as a form of identification?

The police sometimes ask foreigners to show some form of identification.

Every person in line had to show some form of identification.

"I need to see your passport, some form of identification."

You must be able to show some form of identification if required.