Robert gave me his employee ID number, but not his last name.

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But her state has its own income tax, so she had to register for a separate ID number to report and pay employee state tax withholding, and then had to fill out yet another registration for another ID number to file another regular report to pay state unemployment taxes.

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In an interview with police officers, prosecutors allege, he said his mother had been an Air France employee and he had falsified her ID card by adding his name, photo and status as a crew member.

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They can be programmed to automatically dim the lights on sunny days or switch on the a.c. for an employee's cubicle when he swipes his ID badge at the front door.

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The certificate itself contains the issuer's name (for example, Chase Manhattan), a serial number, a signature algorithm ID, an expiration date, an employee's public key and unique identifiers for both the issuer and the employee.

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Rubio and Bennet declined to comment on the ID cards, while a spokeswoman for Mr. Menendez said the lawmaker has supported employee verification with antifraud measures.

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