There are many people who have multiple electronic devices: tablets, phones, iPads, computers, etc. Copay runs on Windows, Linux, iOS, Android, Chrome, OS X, and Windows phone.
You can install Copay on multiple devices and then create a shared wallet that only you use. For single person usage 2 of 2, 3 of 3, or 4 of 4, multisig can be very secure. To steal your bitcoins, the hacker would have to compromise every device you have as part of the shared wallet. This creates a very cheap and secure solution for people who already own multiple electronics. Using Copay on multiple OS's also increases the security.
When creating a shared wallet make sure to write down the words on paper that back up each key. Example: for a 3 of 3 multisig you should have 3 different lists of words on paper for the backup.