Designed for URLs and electronic storage and communication rather than human memory and conversation, it is case-sensitive, using a 36 character alphabet: "23456789bBCdDFgGhHjJKlLMnNPqQrRtTVWX".
Neighbouring coordinates have largely similar encodings and generally vary at the rightmost characters only; however extreme edge cases exist where neighbouring coordinates are on opposing sides of a grid division.
Without vowels, unintended English-language words are avoided that may appear in the original Geohash code.
Compared to storing GPS coordinates using the Decimal datatype in SQL the Geohash-36 does not save significantly on database bytes.
The Shard building, London, at coordinates 51.504444, −0.086667 is encoded as bdrdC26BqH-m (decodes to 51.504444, −0.086666), or may be successfully shorted to bdrdC26B.