Automatic power-off of bluetooth device from linked device

A method for switching a device between a low-power mode and a full-power mode, the method comprising:

• sending information from a second device about its battery level to a first device
• after said sending information, receiving at the second device a first Bluetooth signal from the first device;
• switching the second device to a low-power mode in response to the first Bluetooth signal;
• receiving at the second device a second Bluetooth signal from the first device;
• switching the second device to a full-power mode in response to the second Bluetooth signal.

A system for switching a device to a low-power mode comprising:

• a first device configured to transmit a signal using a Bluetooth communications protocol;
• and
• a second device configured to receive a signal using a Bluetooth communications protocol, wherein:
• the first device is configured to transmit a signal to the second device using a Bluetooth communications protocol in response to recognizing that a battery level in the first device has gone below a threshold;
• and
• the second device is configured to switch to a low-power mode in response to the transmitted signal.

A system for switching a device to a low-power mode comprising:

• a first device configured to transmit a signal using a Bluetooth communications protocol;
• and
• a second device configured to receive a signal using a Bluetooth communications protocol, wherein:
• the second device is configured to send information about its battery level to the first device;
• the first device is configured to transmit a signal to the second device using a Bluetooth communications protocol in response to the information;
• and
• the second device is configured to switch to a low-power mode in response to the transmitted signal.

A method for switching a device to a low-power mode comprising:

• sending, by a second device, information about a battery level of the second device to a first device;
• in response to sending the information, receiving, by the second device, a signal from the first device using a Bluetooth communications protocol;
• and
• the second device switching to a low-power mode in response to the signal received from the first device.