Why are payment ids restricted to [a-z0-9]?

w3c / payment-method-id

Payment Method Identifiers specification

https://w3c.github.io/payment-method-id/

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Why are payment ids restricted to [a-z0-9]? #20

Closed stevenatkin closed 7 years ago

stevenatkin commented 7 years ago

4.1 Syntax https://w3c.github.io/webpayments-method-identifiers/#syntax-1

Is there a specific requirement that identifiers be restricted to [a-z0-9-]? Are there any international card issuers that may require characters outside this range?

ianbjacobs commented 7 years ago

Hi Steve,

I'm not aware that we've encountered any.

Also, these strings are intended for automated matching and so are not intended for humans to read. They will most likely never be seen by users.

Ian

marcoscaceres commented 7 years ago

This seems wrong for URLs. There are effectively two types:

URLs, which are USVString
Predefined enum values (e.g., "basic-card")

We should make sure the spec reflects this properly.