The present disclosure provides methods, computing device readable medium, devices, and systems that utilize a cheek retractor and/or a mobile device holder for case assessment and/or dental treatments. One cheek retractor includes a first and a second lip holder, both including imaging markers of a predetermined size to determine a scale of teeth of a user, where each imaging marker is located a predefined distance from the remaining imaging markers, and where the lip holder is to hold a cheek away from a mouth of a user to expose teeth of the user. A mobile device holder can include elements to receive a mobile device to capture images of the patient's teeth.

A mobile device mounting system includes a device case and a mount. The device case includes: an insert including a rectangular bore and defining a set of undercut sections about the rectangular bore; and a first set of magnetic elements arranged in a first pattern about the rectangular bore. The mount includes: a body; a polygonal boss extending from the body and configured to insert into the rectangular bore; a set of locking jaws arranged on the polygonal boss configured to transiently mate with the set of undercut sections to constrain the polygonal boss within the rectangular bore; and a second set of magnetic elements arranged in a second pattern about the polygonal boss and configured to transiently couple to the first set of magnetic elements to transiently retain the mount against the device case and to drive the set of locking jaws toward the set of undercut sections.

Disclosed is a sensor for detecting the proximity of smart devices previously connected to the sensor using the IEEE 802.11 protocols. Importantly, the sensor does not operate using a Bluetooth® connection, which would require the smart devices previously connected to the sensor using the IEEE 802.11 protocols to also have Bluetooth® protocols enabled. Enabling such Bluetooth® protocols uses more battery than having the IEEE 802.11 protocol adapter enabled. The sensor references a list of previously connected smart devices and attempts to connect with any in range, if none can be connected to, the sensor emits an audible alarm signal. Further, no application is required for the sensor to operate.

Disclosed is a sensor for detecting the proximity of smart devices previously connected to the sensor using the IEEE 802.11 protocols. Importantly, the sensor does not operate using a Bluetooth® connection, which would require the smart devices previously connected to the sensor using the IEEE 802.11 protocols to also have Bluetooth® protocols enabled. Enabling such Bluetooth® protocols uses more battery than having the IEEE 802.11 protocol adapter enabled. The sensor references a list of previously connected smart devices and attempts to connect with any in range, if none can be connected to, the sensor emits an audible alarm signal. Further, no application is required for the sensor to operate.

A user terminal equipment and a method for antenna selection are provided according to the disclosure. The user terminal equipment includes a first signal transceiving antenna, K second signal transceiving antennas, and a rotating assembly. The first signal transceiving antenna and the K second signal transceiving antennas are disposed on the rotating assembly and configured to be driven to rotate by the rotating assembly, where K is a positive integer. The first signal transceiving antenna is configured to operate in a first frequency band, the K second signal transceiving antennas are configured to operate in a second frequency band, and the first frequency band is different from the second frequency band. The first signal transceiving antenna and the K second signal transceiving antennas are carried on a same rotating assembly to realize simultaneous rotation of two antennas operating in different frequency bands.

An example stand for an electronic device, includes a base, a column extending upward from the base, and an interface coupled to the column to engage with the electronic device to suspend the electronic device from the column. In addition, the stand includes a ringed light array coupled to the column that includes an outer diameter that is larger than the larger of a width and a length of the interface.

An example stand for an electronic device, includes a base, a column extending upward from the base, and an interface coupled to the column to engage with the electronic device to suspend the electronic device from the column. In addition, the stand includes a ringed light array coupled to the column that includes an outer diameter that is larger than the larger of a width and a length of the interface.

This invention provides a mobile phone hook including a soft hook body; the soft hook body includes an upper end hook portion and a lower end connecting portion; the upper end hook portion is provided with a hook opening. When using the mobile phone hook, the lower end connecting portion of the soft hook body can be placed on the back of a mobile phone and then covered by a mobile phone case; at this time, the upper end hook portion protrudes outwards from a gap between the mobile phone and the mobile phone case; the lower end connecting portion is gripped tightly by the gripping force between the mobile phone case and the mobile phone, and the protruded upper end hook portion can hook the mobile phone at suitable positions (e.g. the mobile phone can be hooked on the hook at the seat when taking a train or plane).

This invention provides a mobile phone hook including a soft hook body; the soft hook body includes an upper end hook portion and a lower end connecting portion; the upper end hook portion is provided with a hook opening. When using the mobile phone hook, the lower end connecting portion of the soft hook body can be placed on the back of a mobile phone and then covered by a mobile phone case; at this time, the upper end hook portion protrudes outwards from a gap between the mobile phone and the mobile phone case; the lower end connecting portion is gripped tightly by the gripping force between the mobile phone case and the mobile phone, and the protruded upper end hook portion can hook the mobile phone at suitable positions (e.g. the mobile phone can be hooked on the hook at the seat when taking a train or plane).

A mobile device capable of being magnetically attached to a surface may include a first attachment module. The first attachment module may be configured to generate a first magnetic field causing the mobile device to be magnetically attached to the surface. The first attachment module, in response to a pick-up signal corresponding to a detected first operation of a user to pick up the mobile device, may perform at least one of reducing a strength of the first magnetic field or reversing a polarity of the first magnetic field.