The Touch Time bathroom doorknob incorporates a mechanical timer and a speaker that alerts the bathroom user when a specified time period has elapsed.

If an elderly family member stays in the bathroom for a long period of time, it can be greatly worrying for the rest of the family. While the family may be concerned for the wellbeing of their relative (and worried that an accident has occurred), they may not wish to cause embarrassment by directly asking if everything is ok. Touch Time offers a way around this situation by indicating the elapsed time with a knocking sound.

This multi-function doorknob incorporates a timer and a speaker. When the lock-cum-speaker is turned, a mechanical timer is wound up. When the allocated time has elapsed, the bathroom user will be prompted to exit via door-knocking sounds. Thus, embarrassment can be avoided along with the failure to discover accidents. Moreover, anyone taking a shower is alerted to the time they have spent under the running water. They are prompted to avoid the wastage of water and electricity, and to free up the bathroom for other users.