Paul Hawkins, whose company has produced systems for tennis, cricket and football, said it was as though the DRS system was being tested in live conditions.
He also claimed that while Hot Spot's thermal imaging system was great for television viewers, it might not be appropriate to make decisions on whether a batsman was out or not.
Hawkins said: "What cricket hasn't done as much as other sports is test anything. Goal-line technology [in football] has been very, very tested whereas cricket's hasn't really undergone any testing.
"It's almost like it's tested it in live conditions so they are inheriting broadcast technology rather than developing officiating technology.
"Hot Spot is a fantastic piece of technology and has been great for viewers and in a broadcast world things that work often really adds to the broadcast whereas the requirements for officiating are obviously different.
"What I would do personally is put it out to a few universities and I am sure they would come up with something, and there's lots of things on the market."
Hawkins said a quick and easy improvement that would work at all levels of cricket would be for batsmen to be obliged to have tape on the sides of their bats which showed up when the ball had caught an edge.
He added: "I would insist that all batsmen have micro-pore tape, durable and transparent, and if (they) get an inside edge onto the pad the batsman can show it to the umpire and say I am not lbw. That's practical engineering."
The issue of tape on bats is already controversial - Australian broadcaster Channel 9 claimed that players were trying to cheat the thermal-imaging Hot Spot system by covering the edges of their bats with two layers of silicone tape.
England captain Alastair Cook laughed off Channel 9's 'silicone tape' allegations as a "complete fabrication".
"Both sides have laughed at it to be honest with you, at how strange a story it is and absurd, it's just so blatantly not true," he said.
"It's not great when you're called a cheat."