Asda is to introduce a new parking system at its supermarket in the centre of Harrogate.
Cameras are being introduced to check number plates when vehicles arrive and leave the large car park.
Visitors will receive two hours for free but face a fine if they overstay.
Under the old system, motorists bought a ticket from a machine entitling them to park for up to two hours for £1.
The £1 was refundable at the checkout providing at least £2 was spent in-store.
Parking was monitored by enforcement officers rather than by cameras and people could return throughout the day.
There have been concerns raised on social media that anyone wanting to return to the store later in the day under the new system could be fined £70 because the maximum stay is two hours in 24 hours.

The old machines are being replaced by camera technology.
The new system has not yet been activated.
The Stray Ferret asked Asda when the new system would go live and to respond to concerns that motorists could be fined for parking on site twice in one day.
However, the company declined to comment.
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Drug dealer jailed after posing as taxi driver in Harrogate
A drug dealer posing as an Uber taxi driver has been jailed for over two years after dealing drugs in Harrogate in a liveried cab.
Azar Iqbal Rehman, 51, was arrested by police in the Asda car park in Harrogate where he had been loitering in the ‘taxi’, York Crown Court heard.
When police approached the vehicle and tried to confiscate the car keys, the fake cabbie tried to drive off, said prosecutor John Hobley.
Officers searched the vehicle and found 72 cocaine bags and 20 MDMA packets, as well as £710 cash.
Rehman, a married father-of-five who worked as a lorry driver, told officers there were “more drugs at his home”, added Mr Hobley.
Police searched his house and found a further 126 cocaine packets hidden in a lock box inside his bedroom and more cash.
Mr Hobley said the total amount of drugs seized was 85g of cocaine and over 6g of MDMA, an ecstasy-type drug, with an estimated street value of more than £17,000.
Rehman, of Rhodesway, Bradford, was charged with two counts of possessing Class A drugs with intent to supply and one count of possessing criminal property, namely £1,255 cash.
He admitted the offences and appeared for sentence on Tuesday.
‘Half-hearted’ escape attempt
Mr Hobley said Rehman was caught in December 2019 when two officers in an unmarked car became suspicious when they saw the Uber ‘cab’ parked some distance from the entrance to the supermarket. Their suspicions were heightened when it didn’t move for over 20 minutes.
When they approached the vehicle, which was “liveried as an Uber taxi”, Rehman “appeared nervous”.
He was removed from the vehicle after his “half-hearted” attempt at escape.
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Along with the drugs and cash, officers found a mobile phone inside the vehicle, which had a “stream of text messages containing addresses”.
They also found a “dealer debt list”, said Mr Hobley.
Rehman told police he had been dealing for about four months under direction from others.
He claimed he had been paid £150 a week by his drug bosses, but a financial investigation found that £6,000 had been deposited into his bank account during the four months he had been dealing.
Addicted to cocaine
George Hazel-Owram, mitigating, said Rehman had never been in trouble before and started dealing after becoming addicted to cocaine and running up a debt to his own suppliers.
However, he conceded that although there was a “degree of pressure” from those higher up the chain, it “fell far short of duress”.
Rehman had been “directed to drive to certain addresses to deliver drugs”, added the barrister.
He said Rehman had worked “throughout his adult life”, lately as a HGV driver but “predominantly” as a bus driver.
Judge Simon Hickey said Rehman had clearly made a “substantial amount of cash” from his drug enterprise.
He said the fact that Rehman was making drug deliveries in an Uber ‘taxi’ was an aggravating factor as he was “operating under the guise of a taxi to deal drugs on the street”.
He said the police investigation debunked Rehman’s claim that he was only dealing to pay off a drug debt.
He told Rehman:
“You must understand that anybody who deals in Class A drugs is dealing in a pernicious, revolting drug because it causes death (and) misery.”
He said although it was Rehman’s “first foray” into drug-dealing and he had family commitments, it could only be an immediate jail sentence.
Rehman was jailed for two years and eight months. He will serve half of that sentence behind bars before being released on prison licence.