First, “Apple Pay Merchant Identification” is used to determine which Apple Cards can only be used in the United States. HomeKit detects your iPhone when you get home, unlocks the door, turns on the lights, etc.

[Compatible with iOS 18.2] 33 ways to save battery on your iPhone Which settings should you turn off right away? Part 2 First, “Apple Pay Merchant Identification” is used to determine which Apple Cards can only be used in the United States. HomeKit detects your iPhone when you get home, unlocks the door, turns on the lights, etc.

https://news.yahoo.co.jp