Pietersen hit 99 in the first Test against Bangladesh in Chittagong
Kevin Pietersen believes the increasing use of technology in cricket will force batsmen to adjust their techniques.
The 29-year-old was troubled by left-arm spinner Abdur Razzak during the one-day series against Bangladesh.
Pietersen was twice dismissed lbw, a consequence he believes is down to Hawk-Eye persuading umpires to uphold more front-pad leg before appeals.
"You've got to sort your technique out and make sure you use your bat as the first line of defence," he said.
"If you look at some of the decisions, I think Hawk-Eye has definitely played a huge role in lbws being given off the front foot."
Pietersen had suffered a recent slump in form during the tour to Bangladesh, contributing only 69 runs in seven innings before a confidence-boosting 99 during the first Test victory in Chittagong.
But he admitted he has been forced to adapt his technique to overcome his problems with left-arm spinners, something Pietersen believes other batsmen around the world will have to reassess.
"I've had to work a hell of a lot harder than I've ever worked before," said Pietersen, who is set to join Indian Premier League outfit Bangalore Royal Challengers after the second Test in Mirpur.
"I've always worked hard in my career but I spent hours in those nets at Chittagong and something clicked. I might get two good balls next match but in terms of my form and technique I feel good.
"I think every right-hander has this now against left-arm spin - and every left-hander to right-arm spin.
"Batting has changed. It's no surprise to see that three of the top-ranked bowlers in one-day cricket are left-armers (Shakib Al Hasan, Daniel Vettori and Ray Price). That tells you something - there is work to be done."
Meanwhile, fast bowler Stuart Broad, who was an injury concern with a back problem before the first Test, missed training on Thursday because of illness.
Although he is not considered a doubt for the second and final Test starting on Saturday, his condition will be monitored by England's medical staff.