Airscanner Mobile Encrypter secures data residing on your Windows Mobile Pocket PC. Airscanner Mobile Encrypter has user-selectable, popular encryption and decryption algorithms such as 40-bit RC2, 40-bit RC4 and 56-bit DES and also offers Microsoft's Enhanced CryptoAPI, which supports strong, 128-bit RC4 encryption/decryption algorithms. The encryption/decryption is performed at the individual file and folder levels. Each file can be encrypted/decrypted by its own key.
Granular encryption and decryption at the individual file/folder level
Flexible encryption strength and speed.
Support for Windows CE enhanced Crypto API with strong, 128bit RC4 encryption.
The software is free for personal (non-commercial) use (download link below), with licence requirement for business, government, Soho. In this case, use the Handango link below.