Event photos usually end up in a 2,000-photo Drive folder nobody scrolls through. Selfish fixes that. Upload your photos once; each guest opens a link or scans a QR code, takes one selfie, and gets a private gallery of only the photos they're in. No app, no signup.
For venues, the photos you already paid for become marketing: guests share branded galleries, and your Meta Pixel / Google Tag builds retargeting and lookalike audiences. Selfies are deleted right after matching.