In one aspect, an example system includes an arrow nock configured to couple to an arrow, a transmitter coupled to the arrow nock, and a controller. The controller is configured to (i) determine that the arrow has been shot from a bow and (ii) responsive to determining that the arrow has been shot from the bow, cause the transmitter to transmit a beacon signal at a variable rate that varies based on an amount of time elapsed since determining that the arrow has been shot from the bow.

In one aspect, an example system includes an arrow nock configured to couple to an arrow, a transmitter coupled to the arrow nock, and a controller. The controller is configured to (i) determine that the arrow has been shot from a bow and (ii) responsive to determining that the arrow has been shot from the bow, cause the transmitter to transmit a beacon signal at a variable rate that varies based on an amount of time elapsed since determining that the arrow has been shot from the bow.

Technologies for an emergency evacuation system include a system operator and one or more emergency lighting units located in a building. Each emergency lighting unit further includes a processor, communication circuitry configured to communicate with the system operator, and a light indicator configured to be illuminated to indicate an exit of the building.

A transaction is maintained in a shopping cart and processed by a transaction manager in cooperation with a transaction application of a user device. The status device displays a code that when obtained by user device and provided to the transaction manager links the cart to the status device. Acquisition of the code is an indication that the customer associated with the cart is ready to checkout and pay for the items in the cart. The entire payment processing between the application, the transaction manager, and a payment service is monitored by transaction manager. Payment processing statuses for the payment as it processes in real time are sent from the transaction manager to the status device. Status device displays payment status messages on a display of that device and/or illuminates colored lights and/or plays specialized audible sounds indicative of the statuses as the payment processing continues in real time.

A vehicle-mountable child protective device including a housing which is mountable onto a door of a vehicle and including a first housing portion, which is at least partially located within the vehicle when the device is mounted onto the vehicle and during device operation, and a second housing portion, which is at least partially located outside the vehicle when the device is mounted onto the vehicle and during device operation, a flag which is rotatably mounted via a flagpole onto the first housing portion and a flag positioning assembly at least partially within the first housing portion for automatically rotating the flag to a raised position outside of and above the vehicle upon opening of the door of the vehicle.

A vehicle-mountable child protective device including a housing which is mountable onto a door of a vehicle and including a first housing portion, which is at least partially located within the vehicle when the device is mounted onto the vehicle and during device operation, and a second housing portion, which is at least partially located outside the vehicle when the device is mounted onto the vehicle and during device operation, a flag which is rotatably mounted via a flagpole onto the first housing portion and a flag positioning assembly at least partially within the first housing portion for automatically rotating the flag to a raised position outside of and above the vehicle upon opening of the door of the vehicle.

An audio output system for a vehicle. The audio output system includes a volume setting device for setting a volume of an audio signal, an audio input for an audio input signal from an audio source, a warning tone device for providing a warning tone signal, an audio-level measuring device for measuring the audio level at the audio input, and a control unit. The audio-level measuring device is configured to limit the maximum audio level of the audio input signal to a predefined first threshold value as a function of the set volume. The control unit is configured to control an audio output signal on the basis of the warning tone signal, the audio input signal and the set volume, and to output an audible or visual notification if the audio input signal present at the audio input has no audio level.

An audio output system for a vehicle. The audio output system includes a volume setting device for setting a volume of an audio signal, an audio input for an audio input signal from an audio source, a warning tone device for providing a warning tone signal, an audio-level measuring device for measuring the audio level at the audio input, and a control unit. The audio-level measuring device is configured to limit the maximum audio level of the audio input signal to a predefined first threshold value as a function of the set volume. The control unit is configured to control an audio output signal on the basis of the warning tone signal, the audio input signal and the set volume, and to output an audible or visual notification if the audio input signal present at the audio input has no audio level.

A baby monitor system comprises: a memory; and a processor coupled to the memory and configured to: obtain a sleep schedule of a baby; obtain vitals of the baby, wherein the vitals are based on pulse oximetry, Doppler monitoring, or temperature sensing; and cause a first sound or a first light to emit in response to the sleep schedule and the vitals. A method comprises: obtaining a sleep schedule of a baby; obtaining vitals of the baby, wherein the vitals are based on pulse oximetry; and causing a first sound or a first light to emit in response to the sleep schedule and the vitals.

Provided is a multi-functional translation software for the deaf community and/or hard of hearing people. The platform is comprised of a software application installable on a smartphone or other electronic device. Users can input text in one language, allowing it to be translated via an internal translation service into a second language. The software application will automatically connect with a business once within range of the business allowing the customer and the business to communicate via text chat on the software application.