“For the last nine years at Mobile World Congress, Google and its partners have distributed collectible pins featuring Android characters to attendees. They’re fun, cute, and often create a vibrant collectors scene. Collect them all, and you can earn some cool Google merchandise.
For 2019, the pins are back, but they’re also joined by augmented reality (AR) pins accessed and collected in an AR app. But it’s far from being a frivolous time-waster for those who’re supposed to be working. It’s a demonstration of what real-world augmented reality mapping, navigation, and information could be like in the future…”
Source: https://www.digitaltrends.com/mobile/google-ar-partner-walk-ar-mwc2019-news/
