We're getting closer to digital ID. But outside of a few experiments, there's no international consensus. However, every modern passport has an NFC chip which can be read by most airports. You still need to hold your passport on the reader, but it's usually quicker than queuing for a human.
As far as immigration to the US is concerned (and I guess it is, because I haven't heard of the term "immigration" applied to business travelers or tourists anywhere else in the world), expecting to be able to "stroll through" it sounds increasingly naive after reports of various unsuspecting travelers being detained for weeks and then deported (https://www.theguardian.com/us-news/2026/feb/21/karen-newton...), and the current to-and-fro around TSA PreCheck and Global Entry (https://edition.cnn.com/2026/02/22/politics/shutdonw-tsa-pre...).