Sony has extended the registration period in the United States for its identity-theft protection service, AllClear ID Plus, which will provide one year of free, intensive security coverage for PSN and Qriocity users. Registration will now run until July 31 (at 11:59:59 p.m. CST, Sony has been sure to clarify), right from the US PlayStation website.

The offer initially ended June 28, so sign up now while this armored, bullet-proof window of opportunity is still open.
Source- Joystiq