erifyin SpamSMS yArabic CA
M.S. Shahreza · 2006
Thepresent era,whichhasbeencalled theage of information andcommunication technology (ICT), technologies suchas themobile phonehavedeveloped rapidly. Thesetechnologies haveentailed various services andtechnologies basedon them.Theshort message service, abbreviated toSMS,isone ofthe simple formsoftheservices usedinmobile phones and hasbeenwarmly welcomed bythepublic throughout the word,esp. AsiaandEurope. Usingthisservice, individuals can writeandsendtoeachothershort messagesandalso black andwhite pictures. ne oftheways ofadvertising that some companies use issending SMSmessagesintheformofshort text messages to a widespectrumof users. Such advertisements are sometimes sentina way that one cannotrecognize themfromtheregular messages.This article uses theCAPTCHA (Completely Automated Public Turing test totell Computers andHumanApart) methodbasedon thePersian andArabicscripts to recognize commercial messages sentby computer programs.Inthis method, thepicture ofa Persian or Arabic wordisselected andsentas an SMSpicture message,asking thesender totypethewordandsendit backinreply as an SMStext message.Assuchwords cannotberecognized bythePersian or ArabicCR ( ptical Character Recognition) programs thatare available now, only a Persian Arabic humanuser can recognize theword.