PC Checkbook Register that calculates the balance for you automatically. The Checkbook is password protected, so if you loose your flash drive, your information is secured. It also does the math for you and it enters the date for you automatically. You can run the program straight from a flash drive. You can always have your Checkbook register with you at all times. It has password protection to keep your info private, in case you loose your flash drive. It also has an encrypted data file to save and encrypt your credit card info or anything else you would want to keep.