Abstract: Migration of a pairing of wearable device to a new companion electronic device is disclosed. In one embodiment, pairing migration is performed by syncing and verifying a migration key in the wearable and new companion device. Pairing migration includes moving settings and pairing data of the wearable to the new companion device in response to detecting the wearable is associated with the migration key, wherein the migration key establishes a validation of trust of the wearable relative to the companion device. The settings and pairing data can include configuration and protected data and one or more keys to establish a trust relationship between the wearable and new companion device. The settings and pairing data can also include device data such that the wearable can be discoverable by the new companion device.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable items that have been paired or associated with an electronic device, such as a smartphone, are described. In one embodiment, the wearable items automatically detect a removal of a first wearable item from a user's body and an attachment of a second wearable item to the user's body. Messages from the wearable items are transmitted to the electronic device to allow the electronic device to switch the active wearable item from the first wearable item to the second wearable item. The switch can occur while the electronic device is in a locked state, and the electronic device can synchronize the second wearable item with data received from the first wearable item. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable items that have been paired or associated with an electronic device, such as a smartphone, are described. In one embodiment, the wearable items automatically detect a removal of a first wearable item from a user's body and an attachment of a second wearable item to the user's body. Messages from the wearable items are transmitted to the electronic device to allow the electronic device to switch the active wearable item from the first wearable item to the second wearable item. The switch can occur while the electronic device is in a locked state, and the electronic device can synchronize the second wearable item with data received from the first wearable item. Other embodiments are also described.

Abstract: A companion device can obtain a new version of a software program (e.g., in portions) from a server at the request of an accessory device, and provide the new version of the software to the accessory device. The software update of the accessory device can be initiated at the companion device. The companion device can communicate with the accessory device before and after the update to determine whether the update was successful. A notification about the update can then be provided to a user.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable items that have been paired or associated with an electronic device, such as a smartphone, are described. In one embodiment, the wearable items automatically detect a removal of a first wearable item from a user's body and an attachment of a second wearable item to the user's body. Messages from the wearable items are transmitted to the electronic device to allow the electronic device to switch the active wearable item from the first wearable item to the second wearable item. The switch can occur while the electronic device is in a locked state, and the electronic device can synchronize the second wearable item with data received from the first wearable item. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable items that have been paired or associated with an electronic device, such as a smartphone, are described. In one embodiment, the wearable items automatically detect a removal of a first wearable item from a user's body and an attachment of a second wearable item to the user's body. Messages from the wearable items are transmitted to the electronic device to allow the electronic device to switch the active wearable item from the first wearable item to the second wearable item. The switch can occur while the electronic device is in a locked state, and the electronic device can synchronize the second wearable item with data received from the first wearable item. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable items that have been paired or associated with an electronic device, such as a smartphone, are described. In one embodiment, the wearable items automatically detect a removal of a first wearable item from a user's body and an attachment of a second wearable item to the user's body. Messages from the wearable items are transmitted to the electronic device to allow the electronic device to switch the active wearable item from the first wearable item to the second wearable item. The switch can occur while the electronic device is in a locked state, and the electronic device can synchronize the second wearable item with data received from the first wearable item. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable items that have been paired with an electronic device, such as a smartphone, are described. In one embodiment, the wearable items automatically detect a removal of a first wearable item from a user's body and an attachment of a second wearable item to the user's body. Messages from the wearable items are transmitted to the electronic device to allow the electronic device to switch the active wearable item from the first wearable item to the second wearable item. The switch can occur while the electronic device is in a locked state, and the electronic device can synchronize the second wearable item with data received from the first wearable item. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable accessories can scan for one or more on-body states from one or more paired accessories, determine based on a difference in on-body states that a switch between accessories has occurred, the switch being to a second accessory from a first accessory, and transmit synchronization data to the second accessory in response to determining that the second accessory has established a communication connection for data exchange with the companion device. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable items that have been paired with an electronic device, such as a smartphone, are described. In one embodiment, the wearable items automatically detect a removal of a first wearable item from a user's body and an attachment of a second wearable item to the user's body. Messages from the wearable items are transmitted to the electronic device to allow the electronic device to switch the active wearable item from the first wearable item to the second wearable item. The switch can occur while the electronic device is in a locked state, and the electronic device can synchronize the second wearable item with data received from the first wearable item. Other embodiments are also described.

Abstract: A companion device can obtain a new version of a software program (e.g., in portions) from a server at the request of an accessory device, and provide the new version of the software to the accessory device. The software update of the accessory device can be initiated at the companion device. The companion device can communicate with the accessory device before and after the update to determine whether the update was successful. A notification about the update can then be provided to a user.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between watches that have been paired with a device such as a smartphone are described. In one embodiment, the watches automatically detect a removal of a first watch from a user's wrist and an attachment of a second watch to the user's wrist. Messages from the watches are transmitted to the device to allow the device to switch the active watch from the first watch to the second watch. The switch can occur while the device is in a locked state, and the device can synchronize the second watch with data received from the first watch. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable accessories can scan for one or more on-body states from one or more paired accessories, determine based on a difference in on-body states that a switch between accessories has occurred, the switch being to a second accessory from a first accessory, and transmit synchronization data to the second accessory in response to determining that the second accessory has established a communication connection for data exchange with the companion device. Other embodiments are also described.

Abstract: Migration of a pairing of wearable device to a new companion electronic device is disclosed. In one embodiment, pairing migration is performed by syncing and verifying a migration key in the wearable and new companion device. Pairing migration includes moving settings and pairing data of the wearable to the new companion device in response to detecting the wearable is associated with the migration key, wherein the migration key establishes a validation of trust of the wearable relative to the companion device. The settings and pairing data can include configuration and protected data and one or more keys to establish a trust relationship between the wearable and new companion device. The settings and pairing data can also include device data such that the wearable can be discoverable by the new companion device.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between watches that have been paired with a device such as a smartphone are described. In one embodiment, the watches automatically detect a removal of a first watch from a user's wrist and an attachment of a second watch to the user's wrist. Messages from the watches are transmitted to the device to allow the device to switch the active watch from the first watch to the second watch. The switch can occur while the device is in a locked state, and the device can synchronize the second watch with data received from the first watch. Other embodiments are also described.

Abstract: When a new version of a first program is to be installed on a first device, metadata supplied to that device specifies which versions of a second program stored on a second device are compatible with the new version. The first device uses this metadata to determine a compatibility classification that indicates how compatible the current version of the second program and the new version of the first program are, and transitions to a state representative of this compatibility classification. A process executing on the first device receives messages from applications executing on the first device. The process reads mappings between these applications and the message types these applications send. The process forwards an application's message to the second device if the application sends a message type allowable in the first device's state. Otherwise, the process queues that message at least until the first device transitions to a different state.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between watches that have been paired with a device such as a smartphone are described. In one embodiment, the watches automatically detect a removal of a first watch from a user's wrist and an attachment of a second watch to the user's wrist. Messages from the watches are transmitted to the device to allow the device to switch the active watch from the first watch to the second watch. The switch can occur while the device is in a locked state, and the device can synchronize the second watch with data received from the first watch. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between watches that have been paired with a device such as a smartphone are described. In one embodiment, the watches automatically detect a removal of a first watch from a user's wrist and an attachment of a second watch to the user's wrist. Messages from the watches are transmitted to the device to allow the device to switch the active watch from the first watch to the second watch. The switch can occur while the device is in a locked state, and the device can synchronize the second watch with data received from the first watch. Other embodiments are also described.

Abstract: Systems, methods and non-transitory computer readable media for allowing a user to switch between watches that have been paired with a device such as a smartphone are described. In one embodiment, the watches automatically detect a removal of a first watch from a user's wrist and an attachment of a second watch to the user's wrist. Messages from the watches are transmitted to the device to allow the device to switch the active watch from the first watch to the second watch. The switch can occur while the device is in a locked state, and the device can synchronize the second watch with data received from the first watch. Other embodiments are also described.

Abstract: Systems, apparatuses, and methods are provided that can reduce problems associated with updates of various applications on various devices, including addition of new services for communicating with another device. A compatibility version (e.g., a minimum compatibility) for a first communication service on a first device can be checked against a compatibility version for communication service on a second device. A comparison of the compatibility versions can determine whether a message can be sent using the first communication service to the second device.