What you need to know
- Apple has announced a new framework for developers.
- It will let them take advantage of Apple's U1 chip.
- It uses Ultra Wideband technology to improve spatial awareness.
Apple has announced a new 'Nearby Interaction' framework that will let developers take advantage of Apple's U1 chip in iOS 14.
Use NearbyInteraction (NI) in your app to acquire the position of nearby iPhones with a U1 chip, such as iPhone 11 or later. To participate in an interaction, devices in physical proximity run an app and consent to share their position and device tokens that uniquely identify their device. When the app runs in the foreground, NI notifies the interaction session of the peer's location by reporting the peer's direction and distance in meters.
Currently, the U1 chip in the iPhone 11 is only used for directional AirDrop, the new framework will give developers the option to create new experiences based on spatial-awareness. Apple says that "Devices that share their positions using the high frequency of the U1 chip enable a fluid, interactive session in which peer positioning within the physical environment becomes a primary driver of the user experience." The examples of implementation within apps it gives are:
A multiuser AR experience places virtual water balloons in the hands of its participants.
A taxi or rideshare app employs a peer user's direction in real time to identify the relative locations of a driver and a customer.
A game app enables a user to control a paddle with their device and respond to a moving ball on the peer user's screen, as demonstrated by the following figure.
Apple has also published a developer video on the subject, the description of which states:
The Nearby Interaction framework streams distance and direction between opted-in Apple devices containing the U1 chip. Discover how this powerful combination of hardware and software allow you to create intuitive spatial interactions based on the relative position of two or more devices. We'll walk you through this session-based API and show you how to deliver entirely new interactive experiences — all with privacy in mind.
One notable limitation is that the feature works best when all the phones in question are in portrait, rather than landscape.
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