Help me decipher this weird SMS I got:
8 6 777 9 7777 2 6 33 7 555 222 8 444 6 33
This must be some kind of cipher, right?
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1 Answer
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5
If we
use an old-fashioned mobile phone keyboard, or indeed a really old-fashioned dial-phone, where each digit corresponds to a group of letters and repeating the digit advances through that group (1 means something else; 2=A, 22=B, 222=C; 3=D, 33=E, etc.), then we get: TMRWSAMEPLCTIME
so I think whoever sent the message
would like to see you again tomorrow, at the same place and time.
answered Aug 30 at 0:30
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10$\begingroup$ Ways that a puzzle can make you feel old #27 $\endgroup$– StivCommented Aug 30 at 5:21
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3$\begingroup$ Didn't the letters start with the 2 key? 2=A, 22=B, 222=C? $\endgroup$– El GuapoCommented Aug 30 at 19:24
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$\begingroup$ Yup. Which I knew when decoding but had already forgotten when writing the explanation :-). Will fix. [EDITED to add:] Fixed now. Thanks. $\endgroup$– Gareth McCaughan ♦Commented Aug 30 at 19:39
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1$\begingroup$ @Stiv yea, immediately I could recognize this puzzle is about that, and this was really common back then. This puzzle coming back now means it's old enough already that it's now a novel puzzle again 😅 $\endgroup$– justhalfCommented Aug 30 at 21:44
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1$\begingroup$ It's called a multi-tap cipher which is derived from the method @GarethMcCaughan described in his answer. You can get more details on this cipher here - dcode.fr/multitap-abc-cipher $\endgroup$ Commented Sep 2 at 4:55