Bluetooth Profiles; Bluetooth Power States; Bluetooth Radio Power - Motorola ET1 User Manual

ET1 Enterprise Tablet User Guide
devices is based-upon a challenge-response transaction. Bluetooth allows for a PIN or passkey used to create other
128-bit keys used for security and encryption. The encryption key is derived from the link key used to authenticate
the pairing devices. Also worthy of note is the limited range and fast frequency hopping of the Bluetooth radios that
makes long-distance eavesdropping difficult.
Recommendations are:
• Perform pairing in a secure environment
• Keep PIN codes private and do not store the PIN codes in the device
• Implement application-level security.

5.3 Bluetooth Profiles

The ET1 supports the following Bluetooth services:
• Generic Access Profile (GAP) - Must support both Initiator and Acceptor roles.
• Service Discovery Protocol (SDP) - Supports both Local Device and Remote Device.
• Serial Port Profile (SPP) - Supports both Device A and Device B roles.
• Human Interface Device (HID) Profile - Supports Host role.
• Dial-up Networking (DUN) Profile - Supports connecting a computer to the ET1 to access the internet.

5.4 Bluetooth Power States

The Bluetooth radio is off by default.
• Suspend — When there is no active Bluetooth connections, the Bluetooth radio turns off.
If there is an active Bluetooth connection between the ET1 and another Bluetooth device and there is no
data activity, the ET1 will time out. However, if the user presses the Power button on the ET1, the ET1
will suspend and upon receiving data from a remote Bluetooth device, the ET1 will wake from suspend
mode. For example, Bluetooth scanner sending data to the ET1.
• Resume — When the ET1 resumes, Bluetooth turns on if it was on prior to suspend.
• Airplane Mode — When the ET1 is placed in Airplane Mode, the Bluetooth radio turns off. When Airplane
Mode is disabled, the Bluetooth radio returns to the prior state.

5.5 Bluetooth Radio Power

Turn off the Bluetooth radio to save power or if entering an area with radio restrictions (e.g., an airplane). When
the radio is off, other Bluetooth devices cannot see or connect to the device. Turn on the Bluetooth radio to
exchange information with other Bluetooth devices (within range). Communicate only with Bluetooth radios
in close proximity.
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MN000022A01 - May 2013