Computer Payment Enforcer

Sell or lease computers and have customers not paying on time. Install Computer Payment Enforcer (CPE) on the computers. Input information on when payments are due. Each day, CPE displays a small screen telling the customer how many days are left until their next payment is due. When a payment is due, CPE totally blocks access to the computer until the user inputs a code. You provide this code when the customer pays their bill.

Limitations:

User can bypass security until registration