Each account is password protected. However, you may have a form open and in use. If this is the case please contact me and I will reset the password. This will render the existing session void. Remember, no data is stored on the device.
I would recommend considering a Mobile Device Management (MDM) service. This will provide you with peace of mind for all data on your mobile devices: Laptops, Tablets and Smartphones. If a device get’s lost it can be wiped remotely. I can offer assistance with this through a trusted partner if required.