A passkey is a secret code or a special key that is needed to gain access to something, such as a locked door, a computer, or an encrypted file. Full definition
Even if you make it to the third floor, home of the Securities and Commodities Fraud Task Force, Southern District of New York, you'll need an electronic passkey to get in. (fortune.com)
«Certified Copy» operates almost in reverse of most thematically inclined works of art, which plunge us into a falsely desultory universe and gradually reveal their master interpretive passkey. (rogerebert.com)
However, an innovative solution from Xirrus allows you to provide students with their own individual passkey before classes begin. (qaeducation.co.uk)