Here is a slightly off topic cool search tip I recently found thanks to @outsidecontext*:
In ZXing barcode scanner, settings, custom search URL, paste this:
https://musicbrainz.org/search?type=release&method=advanced&query=barcode%3A%s
I’ve been using this for only a few days and it’s
huge, man, to manage my collection without having to type with my big fingers on my small screen, any more!
* Once you have installed ZXing barcode scanner, you can also send your barcode searches to a Picard, running on a PC in the same local network wi-fi, by using his Picard Barcode Scanner. Read instructions on homepage.