The people in the know memorize the rebus. But you mentioned nobody wants to think so...
-- rk -----Original Message----- From: ProfoxTech <profoxtech-boun...@leafe.com> On Behalf Of Frank Cazabon Sent: Thursday, October 11, 2018 10:54 AM To: profoxt...@leafe.com Subject: Re: Numbering Scheme Thanks, Obscuring the number is not a problem, but I think they want to be able to read the number off the ticket at the end of the day in sequential order and I don't see how I can come up with a simple way to do this. Frank. Frank Cazabon On 10/10/2018 03:48 PM, Richard Kaye wrote: > One way is to come up with a 10 letter "word" with each letter representing a > digit. You then convert the numeric sequence to alpha characters. And to > avoid the pattern being too easily spotted, add one or more random > characters to the final string. It's not the most robust encryption scheme in > the world but it should obscure it enough. Here's a bit of VFP code to do > this using the non-dictionary phrase MONKEYSHIP as the rebus. Pass it the > number to encode and optionally .t. as the second parameter to append a > single random character at the end. > > ************************************** > * Program: MONKEYSHIP.PRG > * Date: 05/07/2007 03:26 PM > * VFP Version: Visual FoxPro 09.00.0000.7423 for Windows > * Notes: > ************************************** > > FUNCTION MonkeyShip(m.tnStringToEncode AS Number, m.tlRandom AS > Boolean) LOCAL m.lcRetval AS Character > m.lcStringToEncode=ALLTRIM(TRANSFORM(m.tnStringToEncode,[9999999999999 > 99])) > LOCAL ARRAY laRebus[10,2] > m.laRebus[1,1]=1 > m.laRebus[1,2]=[M] > m.laRebus[2,1]=2 > m.laRebus[2,2]=[O] > m.laRebus[3,1]=3 > m.laRebus[3,2]=[N] > m.laRebus[4,1]=4 > m.laRebus[4,2]=[K] > m.laRebus[5,1]=5 > m.laRebus[5,2]=[E] > m.laRebus[6,1]=6 > m.laRebus[6,2]=[Y] > m.laRebus[7,1]=7 > m.laRebus[7,2]=[S] > m.laRebus[8,1]=8 > m.laRebus[8,2]=[H] > m.laRebus[9,1]=9 > m.laRebus[9,2]=[I] > m.laRebus[10,1]=0 > m.laRebus[10,2]=[P] > m.lcRetval=[] > m.lcChar=[] > FOR m.x=1 TO LEN(ALLTRIM(m.lcStringToEncode)) > > m.lcChar=m.laRebus[ASCAN(m.laRebus,VAL(SUBSTR(m.lcStringToEncode,x,1)),1,-1,1,8),2] > m.lcRetval=m.lcRetval+m.lcChar > NEXT > IF m.tlRandom > LOCAL m.liCounter AS Integer > PRIVATE m.pcRandomChar > m.pcRandomChar=[ ] > m.liCounter=1 > *!* get a bunch of values to work with which will hopefully give at least one > alpha not in monkeyship > DO WHILE NOT ReturnRandom() > m.liCounter=m.liCounter+1 > IF m.liCounter=10 > EXIT > ENDIF > ENDDO > IF m.liCounter=10 && we went through loop 10 times and could not > get a char back > m.lcRetval=[Q]+m.lcRetval > ELSE > m.lcRetval=m.pcRandomChar+m.lcRetval > ENDIF > ENDIF > RETURN m.lcRetval > ENDFUNC > > FUNCTION ReturnRandom > LOCAL m.lcRandomSeed AS Character, m.lIsGood AS Boolean > *!* get a bunch of values to work with which will hopefully give at > least one alpha not in monkeyship > m.lcRandomSeed=SYS(2015)+SYS(2015)+SYS(2015)+SYS(2015) > m.lIsGood=.f. > FOR m.y=LEN(m.lcRandomSeed) TO 2 STEP -1 && don't need to check first > char in sys(2015) > IF ISALPHA(SUBSTR(m.lcRandomSeed,y,1)) AND NOT > UPPER(SUBSTR(m.lcRandomSeed,y,1))$[MONKEYSHIP] > m.pcRandomChar=SUBSTR(m.lcRandomSeed,y,1) > m.lIsGood=.t. > EXIT > ELSE > m.lIsGood=.f. > ENDIF > NEXT > RETURN m.lIsGood > ENDFUNC > > -- > > rk > > -----Original Message----- > From: ProfoxTech <profoxtech-boun...@leafe.com> On Behalf Of Frank > Cazabon > Sent: Wednesday, October 10, 2018 3:25 PM > To: profoxt...@leafe.com > Subject: Numbering Scheme > > I have a client who issues tickets in numerical sequence (it's a pawnshop). > The sequence helps them balance things back at the end of the day (read that > as check for stealing) when checking the various parcels received for the > tickets issued (they keep a copy of the ticket issued to their customer and > at the end of the day sort them sequentially and read the numbers off the > tickets to ensure they match the parcels). They are now not wanting the > number printed on the ticket as their competitors may be able to get an idea > from the sequential numbers how much business they are doing (by getting a > ticket early in the morning and then one ate in the afternoon). > > So, they have asked me to come up with a solution and I must admit that I am > coming up blank. > > Any ideas? > [excessive quoting removed by server] _______________________________________________ Post Messages to: ProFox@leafe.com Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/profox OT-free version of this list: http://mail.leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/bn6pr10mb1299de4fbbfdb48e626a5649d2...@bn6pr10mb1299.namprd10.prod.outlook.com ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
