that won't last.<p>How long till Facebook releases an iPhone app that lets you take a photo of a person on the street, then query that photo with facial recognition software against the millions of photos on their servers.<p>5 years? 10 years?<p>You don't even have to query a ton of people.<p>1. Query the immediate area around the person to see if the guy you took a pic of has the app installed on his phone.<p>2. Query all people in a 10 mile radius<p>3. Query all people in the state for a $5 fee.<p>4. Query all people in the country for a $50 fee