Validator is a free Android app developed by Qryptal. Its main purpose is to help users quickly validate the authenticity of documents. The app can be used with any document that contains a QR code and text or URL instructing the use of this app to validate. Users can scan the document code with this app and get an instant validation result. The app can be used with both original documents, photocopies, or soft copies.

One of the key features of Validator is its speed. It allows users to validate documents in seconds without having to figure out how to validate documents issued by an organization, contact them, or sign up for an account. Another major feature is its security. The QR code is digitally signed and tamper-proof, so any modification invalidates the entire code. Additionally, no network connectivity is required for primary information as all the primary information is securely encoded within the code. Code attachments will require connectivity, but the security envelope is always maintained. Lastly, the verification of the code is done entirely within the app, ensuring privacy, and no outside servers can track which documents are validated.

Overall, Validator is a useful and reliable app for anyone who needs to quickly validate the authenticity of documents.