An innovative app uses AI to reunite lost pets with owners

B.R. Shenoy

A South Korean startup has developed an app that scans a dog’s nose print for easy identification.
n kissing dogPhoto byFLOUFFYonUnsplash

Losing a pet is one of the most devastating experiences for any pet owner. Fortunately, a South Korean startup has developed an AI-based app that can help reunite lost pets with their owners.

The app scans a dog’s nose print, which is just as unique as a human’s thumbprint, and places it in a crowdsourced database that anyone can access.

Petnow app

  • The Petnow app developed by Yonsei University is available for free on marketplaces in South Korea, Spain, and the US.
  • Pet owners can register their dog’s nose print by taking a picture with their smartphone.
  • For cat owners, the algorithm can identify cats by their whole face instead of just the nose.
  • The app uses three kinds of AI to identify a noseprint even if the nose is moving about.
  • The advantage of using Petnow to identify a lost pet over a microchip is that anyone can access it. Microchips require a scanner, which not everyone has at home. Moreover, tags and collars can fall off, making identifying the pet’s owner challenging.
  • Petnow’s team has honed their AI to a 99% accuracy, making it a reliable tool for pet owners.
  • Petnow’s crowdsourced database is the foundation of the idea. Anyone who comes across a lost pet can take a picture of its nose or face and see if it matches with one on the app.
  • If there’s a match, the app instantly provides the owner’s contact information. However, the app’s success relies on as many people as possible using it. Shelters, vet clinics, and other pet businesses can help get the word out and encourage people to use the app.


Losing a pet can be a traumatic experience for pet owners. Petnow’s AI-based app can help reunite lost pets with their owners by scanning a dog’s nose print or a cat’s face and placing it in a crowdsourced database.

The app’s accuracy and accessibility make it a reliable tool for pet owners.

By spreading the word about the app, we can help reunite more lost pets with their owners.


Will you be checking out the app? Let us know in the comments.

A version of this story originally appeared on Medium.

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A seasoned content creator with an M.S. in Toxicology, specializing in unique narratives, heartwarming animal tales, and local news.

Texas, State

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