There are multiple extra security measures you can take to protect your Bitcoin.com wallet depending on your device’s availability.
If your device has such option, you can add an "App lock" pin code or a fingerprint ID.
To enable these, please check the instructions with your devices manufacturer.
If the TouchID/PIN are enabled on your device, tap on the "Settings" cog in the bottom right of your wallet "Home" screen and activate the “App Lock” feature from the Settings page.
If you have any further questions regarding securing bitcoins in your Bitcoin.com wallet. Please email our support team: wallet@bitcoin.com