Following heartbreaking stories of the death of toddlers forgotten by their parents in hot cars, automakers made claims that they would be working on new technology to help prevent the tragedies.

Following heartbreaking stories of the death of toddlers forgotten by their parents in hot cars, automakers made claims that they would be working on new technology to help prevent the tragedies. But years later that technology has not been produced, so parents and teens are developing it instead. Independent entrepreneurs are working on a slew of solutions for baby on board tech that would stop hot-car deaths, including car seat sensors, smartphone apps, and low-tech solutions. Many are seeking backing on crowdfunding sites to make their products a reality. (Washington Post)