It's like Foursquare and Yelp for sex.
The condom packages were printed with QR codes, which can be scanned by smart phones to "check-in" online and let the world know where people are having safe sex. People also can rate their experiences from "Things can only improve from here" to "Ah-maz-ing."
The anonymous check-ins show up on a map on the Where Did You Wear It website and are searchable by gender, sexual orientation, age and location.
So far, Planned Parenthood, which distributed more than 55,000 coded condoms, said it has seen check-ins from 48 states and six continents.
The Planned Parenthood program is aimed at promoting safe sex and the use of condoms.
"Where Did You Wear It attempts to create some fun around making responsible decisions,” Planned Parenthood's Nathan Engebretson said. “We hope the site promotes discussions within relationships about condoms and helps to remove perceived stigmas that some people may have about condom use."
Mashable said the Planned Parenthood project might be the first condom map of the world.
Seattle Weekly called it "a new opportunity for you to share your celebration with the world (and rate your partner while you're at it), all in the name of safe sex."
Time said "the interactive map and sex ratings are actually a little hokey" and "not as illuminating as you’d think" but applauded Planned Parenthood's effort, calling it a "a noble one."
The site has garnered more than 45,000 unique visitors but most are "just rubbernecking, rather than scanning their rubbers," Seattle Weekly noted.
Still, the site has seen more than 4,000 check-ins, it reported.