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How much shorter could this system be with Emojis? Can they contain enough info to limit it to 3-4 emojis? That would be easier to remember.

Emoji adoption for any smartphone issue wouldn't be an issue.

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Each symbol of the 11 characters in the plus code is in base 20. There are about 2500 emojis, meaning that you can encode 2 symbols from the plus code with one emoji (20*20=400, if you try to encode 3 symbols, it becomes 8000, which is way more than the current emoji count). So that would become 5 emojis, instead of 11 characters, which in my opinion would look quite nicer.

Given the data Google has, I'm sure they could come up with an efficient encoding scheme that would use far fewer emoji on average by prioritising popular coordinates.

Most people do not know the exact transliterations for many emoji, so aural transmission becomes difficult.

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