DALLAS - Point of sale debit cards and credit cards can coexist,  issuers were assured this week. 
Speaking at the Faulkner & Gray POS Conference, Payment Systems Inc.'s  Neil Chambliss sought to relieve concerns that debit services could   cannibalize credit card issuers' rampantly profitable businesses.   
  
"People say, 'Well, isn't debit going to eat into the credit card base?'  Possibly, but not by much," said Mr. Chambliss, director of financial   delivery systems for the Tampa, Fla.-based researcher. "POS debit users   have higher outstanding credit card balances than that of non-users."     
His message had significance because few debit card issuers were in  attendance at the conference in Dallas, a fact Roger Peirce, chief   executive officer of electronic funds services for First Data Corp.,   lamented in his keynote address.     
  
"A plastic card has been reasonably useless unless it can be used at the  point of sale," Mr. Peirce said. 
Citing research by his firm, Mr. Chambliss predicted a future of strong  growth for point of sale debit. 
"All the key indicators of growth have been positive over the last five  years," he said, noting that 21% of households use debit cards at least   once a month, up from up from 9% in 1991.   
  
"Plus, the monthly transaction volume of POS/debit users is increasing,"  a trend Mr. Chambliss attributed to "merchant acceptance and increased   consumer acceptance of the card."   
Gauging trends through statistics can be tricky. Mr. Chambliss alluded  to the parable of a man who drowned because he thought he could walk across   a lake "since it had an average depth of three feet." It seems, however,   that the numbers support his prediction.     
According to Mr. Chambliss, the average debit user is 43 years old and  has a household income of $56,000. "Seventy-five percent of debit users are   credit card revolvers, while 45% of them are chronic revolvers," he said.   
"The best candidates for POS/debit are bank card revolvers," he said.  "All consumer segments show the potential for growth, with the mass market   in affluent segments demonstrating the strongest growth potential."   
  
Mr. Chambliss said that of the top 150 financial institutions, 44%  promote on-line debit programs, 37% issue off-line cards, and 20% plan to   issue off-line cards in the next six to 18 months.   
"Regional differences are still there," he said, "but we see them  leveling out a bit."