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US website offers Caller ID falsification service: “Overdue debtors beware: You may not be able to rely on Caller ID to screen out those annoying bill collectors much longer. A California entrepreneur has a plan to bring the hacker technique of Caller ID spoofing to the business world, beginning with collection agencies and private investigators.

The user fills out a simple Web form with his phone number, the number he wants to call, and the number he wants to appear to be calling from. Within two seconds, the system rings back, and patches the user through to the destination. The recipient sees only the spoofed number displayed on Caller ID. Any number works, from nonsense phone numbers like “123 4567″ to the number for the White House switchboard.”