Time management software for internet cafes or rented computer B-locker is a system for centralized time control of a network of computers. It is best suited for management of sold computer time, for example for internet cafes. Its aim is simple - the user is allowed to work with the rented computer exactly the time that was paid for. When the time is over, the computer completely stops accepting mouse and keyboard input.B-locker may be used without timer to prevent user input permanently on servers or dedicated workstations. For example, it may be used by system administrators in big organizations to ban user access to servers. Blocked computers get their performance slightly increased (5 - 7%) while doing other computational tasks.B-locker also includes a capability of remote reboot/logoff.It doesn't matter for B-locker what kind of software the client workstation is running. A user may browse websites, play an interactive game or work with a UNIX terminal - but only the time that you were paid for.B-locker allows you to:* Automatically locate connected client computers Monitor state of each client computer, including its timer * Sell computer time with a one-second precision * Receive alerts about client computers state changes to blocked and off * Report suspicious client's activity in timely manner * Add time, set unlimited/available state, instantly block/unblock, pause/resume timer with a single mouse click * Reboot or logout from the current session on the client computer with a single mouse click * Set time for warning before block - the user will receive a one-time reminder * Set a full-screen arbitrary picture while client computer is blocked