In-App Tag Reading
An app can enable single- or multiple-object scanning when the app is active, and display a scanning sheet whenever the user is expected to scan something.

Don't encourage people to make contact with physical objects. To scan a tag, an iOS device must simply be within close proximity of the tag. It doesn't need to actually touch the tag. Use terms like scan and hold near instead of tap and touch when asking people to scan objects.
Use approachable terminology. Near Field Communication may be unfamiliar to some people. To make it approachable, avoid referring to technical, developer-oriented terms like NFC, Core NFC, Near Field Communication, and tag. Instead, use friendly, conversational terms that most people will understand.
UseDon't useScan the [object name].Scan the NFC tag.Hold your iPhone near the [object name] to learn more about it.To use NFC scanning, tap your phone to the [object].
Provide succinct instructional text for the scanning sheet. Provide a complete sentence, in sentence case, with ending punctuation. Identify the object to scan, and revise the text appropriately for subsequent scans. Keep the text short to avoid truncation.
First scanSubsequent scansHold your iPhone near the [object name] to learn more about it.Now hold your iPhone near another [object name].
Background Tag Read