I hope this doesn't give the Singapore government any ideas.
Excerpt:
ABOUT OPERATION MANDATORY PATRIOTIC TATTOO: As part of the Office of Homeland Security's broad, discretionary power to enact any and all initiatives which may or may not prove effective in America's ongoing fight against terrorism, Governor Tom Ridge has unilaterally passed into law legislation requiring American citizens to obtain an exciting new breed of tattoo. Modeled on the ubiquitous Universal Product Code (UPC), the Subcutaneous Patriotic Intelligence Tattoo System (SPITS) acts as both a unique identifier and a satellite-trackable global positioning device, enabling the wearer to rest easy in the knowledge that s/he is quantifiable, qualifiable and locatable by the federal government at all times.