Hi all,
I'm working on a use case where a customer checks in at a point of service (e.g., a cafeteria or restaurant) using their Apple Wallet pass (e.g., a digital employee badge).
In this scenario, we would like to use an iPhone (with a custom iOS app) as the NFC terminal to read the pass directly from the customer's iPhone over NFC.
I’m aware that "Tap to Pay on iPhone" allows NFC-based payment acceptance, but it’s unclear if similar functionality is available or permitted for reading access-type passes from another iPhone via NFC.
Key questions:
Is it technically possible for an iPhone to act as an NFC reader for a Wallet pass on another iPhone?
If not, is this restricted due to Secure Element isolation or protocol limitations?
Is there any Apple-supported path for building such a solution — or is certified external hardware (e.g., HID, Wavelynx) the only option?
I’ve reviewed the Core NFC and PassKit documentation but couldn't find a definitive answer.
Thanks in advance for your clarification!
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Hi all,
In Swift, I often see static helper functions grouped in an enum without any cases, like this:
enum StringUtils {
static func camelCaseToSnakeCase(_ input: String) -> String {
// implementation
}
}
Since this enum has no cases, it cannot be instantiated – which is exactly the point.
It’s meant to group related functionality without any stored state, and without the need for instantiation.
This pattern avoids writing a struct with a private init() and makes the intent clearer:
"This is just a static utility, not an object."
You’ll often see this used for things like:
AnalyticsEvents.track(_:)
My question:
Is this use of a case-less enum considered good practice in Swift when building static-only helpers?
Or is there a better alternative for expressing intent and preventing instantiation?
I’d appreciate any insight – especially if there’s official guidance or references from the Swift core team.
Thanks!
Topic:
Programming Languages
SubTopic:
Swift