Think Outside Sierra Keyboard User Manual

 
When the Stowaway Sierra keyboard is no longer needed, the keyboard 
driver may be disabled by tapping the Disable button on the BT or Config 
page. The Connection is not set up message will then be displayed on the 
BT page. 
 

NOTE: Disabling the keyboard will break the bond between the keyboard 
and the mobile device.  

NOTE: Disabling the Stowaway Sierra keyboard will not automatically turn 
off the Bluetooth radio. Conversely, turning the Bluetooth radio off while the 
Stowaway Sierra keyboard driver is still enabled will not work. Because of 
the behavior of the Bluetooth stack, the Bluetooth radio will automatically 
turn back on after a few seconds. To turn the radio off, the Stowaway Sierra 
keyboard must be disabled first. 

 
To re-enable the connection, tap the Connect button on the BT page or tap 
Enable on the Config page. See 

 

for complete instructions. 
 
 

 
When a secure connection is established, the paired devices share a 
permanent security bond. This bond is established when two devices create 
and exchange a Link Key, this process is also known as pairing. Link Keys 
are based on a unique Bluetooth Device Address, an internally generated 
random number and a user defined Passkey. 
 
With a Bluetooth connection, transmissions may be intercepted. In order to 
limit this exposure, a secure connection should be set up. This encrypts data 
sent from the keyboard to the mobile device, creating a virtual cable. This 
means that there is a 1:1 relationship between the mobile device and the 
keyboard and it will not respond to connection requests from other devices. 
The mobile device on the other hand will retain the ability to create new 
pairings with other devices. 
 
The mobile device searches the Bluetooth radio band until it finds the 
keyboard. If the Secure box is checked it will prompt for a Passkey. Once 
completed, each time the mobile device and keyboard are powered on within 
range of each other, the devices will be reconnected with a key press.