TL:DR; Create encrypted USB Stick with embedded autoplay module.
Create encrypted USB Sticks. Every encrypted usb stick contains AutoPlay module. You just need to connect the encrypted usb flash drive to the computer and enter password to work with it.
EncryptMe is a software product that is used to encrypt any user files (documents, images, etc.) and limit access to your information. The program uses the AES algorithm with the 256-bit key length to encrypt data.
To lock sensitive programs like tax preparation software, personal finance program or other programs, PCTuneUp Free EXE Lock is designed for your demands. This free application lock software can add password to executable programs on your computer.
GoAnywhere`s Open PGP Studio is a free PGP file encryption tool that helps you encrypt, decrypt, sign, and verify documents with PGP. Protect your sensitive files while complying with the Open PGP standard with Open PGP Studio.