Can the Authoritative Voice be Maintained in 160 Characters?
Effective and reliable warning systems must be capable of maintaining an ‘authoritative voice’ or established ‘warning chain’. The technology used in such alert systems often contain some form of source verification or a confirmation channel to maintain the overall network integrity. The lack of such a confirmation channel within SMS alert systems is of primary concern. While one can set up a short code, establish a dedicated number, or even apply a name to the warning authority (in essence creating a recognizable ‘from address’), it seems highly unlikely that most individuals will know or confirm the sender of information. This is particularly true when an SMS alert system is used for the general public rather than a closed group or ‘club’ of individuals. Unfortunately, this leaves the possibility of spoofing messages or circulating rumors open. There are numerous anecdotes of rumors being disseminated via SMS. These range from a tsunami hoax in 2006 (1, 2) to more local rumors of AID
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