Many computers go into a "lockout" mode for 24 hours if the diver violates the computer's safety limits, to discourage continued diving after an unsafe dive. While in lockout mode, these computers will not function until the lockout period has ended. When this happens underwater it will leave the diver without any decompression information at the time when it is most needed. Other computers, for example Delta P's VR3, will continue to function, providing 'best guess' functionality while warning the diver that a stop has been missed, or stop ceiling violated. The Scubapro/Uwatec Galileo technical trimix computer will switch to gauge mode at 155 m after a warning, after which the diver will get no decompression information.