ID Card Checker is a useful utility application that allows users to check the validity of identity documents such as ID cards and passports. It is developed by DROIDSPIRIT and is available for free on the Android platform.

The application is designed for police officers, customs officers, bank employees, and rental car companies who deal with identity cards and passports on a regular basis. The ID Card Checker evaluates the machine-readable zone of the identity card and calculates the correct check digits for birth date and expiration date to ensure accuracy.

In the pro-version, users can check the completely machine-readable zone, including serial number, date of birth, expiration date, personal number, and total check id, for its correctness. The app also provides an overview of the digits of the used OCR-B font, including counter-examples, allowing users to compare the present number with the OCR-B font. Additionally, it shows examples of fake identity documents with an incorrect machine-readable zone.

The ID Card Checker has been developed with the advisory support of detectives and is available in over 190 countries for proof of identity documents. It requires only basic permissions, including internet access and network state for advertising in the free version.