Related Clues:

• State that's 25% desert: abbr.
• Job application no.
• Prevalent ID
• Nine-digit fig.
• I.R.S. ID
• 1040 digits: abbr.
• 1040 no.
• Double-dash fig.
• IRS identifier
• ID theft datum
• ID with two hyphens
• ID theft data, perhaps
• W-2 datum: Abbr.
• Phishing string: Abbr.
• State where a famous historical trail ended: Abbr.