STRATFORD - A Massachusetts-based supermarket chain with stores in Connecticut is doing away with those self-service checkout lanes.

Big Y says the self-serve lanes will be phased out of its stores by the end of the year.

The chain opened self-serve lanes in 2003 as a way to speed up the checkout process.

However, a study found that checkout times have lengthened as customers grapple with bar codes, coupons and payment methods.