OLAF-App is an app that helps you to get back your lost items. The idea is that QR codes are attached to these items. If other people see the lost item, they can scan the QR code and discuss the return within an anonymous chat. ADVANTAGES - Owners of items to secure do not need to disclose private information such as name, address or email - The arrangement follows without exchange of a mobile phone number - The finder does not require an extra app, just a QR code scanner - Push notification when an item was found - Any number of QR codes can be managed with the app