The collection, analysis, and interpretation of public opinion play invaluable role in therndevelopment of socio-economic and political situations of a society.rnDifferent techniques can be used to collect public opinion polls including personal interview,rnvoice call, Internet, post etc.rnHowever, most of the techniques stated above have a combination of one or more the followingrnshort comings: limited area coverage, high cost, difficulty of use, availability, homogeneousrnsocial strata, very high response time etc.rnOn the contrary, the newly emerging and rapidly expanding mobile wireless technology enablesrnanytime anywhere communication. Recently, there is the high expansion in the use of SMSrntechnology, reduction in the cost of bulk SMS, and reduction in the cost of mobile subscriptionrnfee (high penetration). These make the use of mobile phones to collect public opinion an optimalrnsolution and create an enabling environment for the widespread development of SMS basesrnapplications and services.rnIn this project work, we made use of the SMS technology to develop a SMS based PublicrnOpinion Polling System (SMSPPoll). The system uses a GSM modem attached to a computer tornsend and receive messages to and from respondents. Since the GSM modem is considered as onernof the communication ports in the computer system, the technique utilize the I/O port APIsrnprovided by the .NET framework.rnSMSPPoll is capable of composing questions, sending questions as SMS messages tornrespondents, accepting SMS responses from respondents, summarizing poll results andrnpresenting the results in tabular and graphical formats. The application also enables tornprint/export results as appropriate.rnKeywords: Mobile phone based opinion polling; SMS based opinion polling