Knowledge — keyless

When a large group of people need access to a single door, but you don't want to deal with the hassle of keys, what you need is a mechanical push-button lock. You enter your code, and the door opens. Done.  These days, electronic locks, remote control, wireless, Internet Of Things (IOT), connected Everything, and all things high-tech are all the rage. But sometimes you just need a simple solution to a simple problem.  There is no need to worry about replacing batteries, wiring, wifi, IT troubleshooting, power outages, or carrying around extra keys (or lost or stolen keys). Remember Occam's Razor: "All things being equal,...