There’s a 2-D barcode standard called PDF417 which my company built decoders for (just before we got out of the barcode business) which can encode up to 1 KB in a barcode about 2 inches square. It’s really caught on for encoding relatively large databases on small cards; look for it on your Citizen ID card soon !
UPS’s symbology I recall is called Maxicode, and is unique to UPS.
I’m sure that the major barcode vendors make decoders for it (Accusort is the leader, I expect) but it’s not used generally in industry. It’s purpose in life is not high data density but rather resistance to data loss or corruption by smudging, tearing, etc.
“It ain’t no sin to be glad you’re alive”