Origin of keyless
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for keyless
"Line clear" appears on the opening, and also at that of A's keyless disc.
Unless his keyless indicator is at normal, he may not ask, "Is line clear?"
A story which in the beginning is very like "The Keyless Chest."
There were two doors, the one I had entered by and another which was locked and keyless.Ghosts I Have Seen
Suppose there was a time when the piano was keyless, as a baby is toothless.Elementary Theosophy
L. W. Rogers