HOUSTON -- A Texas company hopes a little key chain could keep parents from forgetting children in hot cars, KPRC Local 2 reported Friday.

In two days, two children in the Houston area have died in hot cars. A grandmother left a 3-year-old boy in the car for 10 hours in Webster on Wednesday. The second died Thursday when a mother forgot her 3-year-old son and left him in her pickup truck outside North Cypress Medical Center.

A company that makes a product called ChildMinder said it can prevent drivers from forgetting children.

"Some people say, 'How can a parent forget a child in a car? But I know it's so easy," said Jocelyn Spears of Baby Alert International. "All of our lives are very, very busy and we just get distracted and we forget something. It's just as simple as forgetting milk when you go to the grocery store."

ChildMinder works when the weight sensing "smart pad" is in a child's car seat. Their weight turns on the system. If a driver turns off the car and walks more than 15 feet away, the key ring alarm warns that the baby is still in the car.

The ChildMinder system can be purchased online for about $60.

Some parents, including one father of twins, have their own reminders. Richard Penn said he keeps a diaper bag in the front seat to remember children Molly and Nathan.

"I'm aware that if I don't have my keys or my cell phone there, I don't have the kids so I better go back to the car," he said.

Fore more information about the ChildMinder visit babyalert.info.