Open House App for iphone

[Ron Hollingsworth]

Several years ago I was doing a lot of open houses and I would pay a guy to put out my signs.  I had an app that we both downloaded that would allow him to snap a photo of the sign within the app and the app would geo locate where he was as proof that he put the sign up where I wanted him to.  I can not for the life of me find that app.  Anyone use something like this?