Can you use an encryption key on more than 1 device?

Hello,  looking to be able to use on more than 1 device.  How can I use/ setup a key on multiple devices? 

The same key file can be used in multiple devices, you just need to copy it to another device. We would recommend you to check this guide before using encrypted forms: https://www.jotform.com/help/344-Encrypted-Forms-and-How-to-Use-Them