alt Hacker News> Yes, but it wouldn't necessarily be easy to use or consumer friendly. The ideal solution would have the baby with their back facing front, and the attached carrier facing inwards towards the seat.
There is an existing international standard (ISO 13216) for child safety seats in cars:
* https://en.wikipedia.org/wiki/Isofix
It could be added to airplanes seats.
Fun fact all these rules act as contraception. Who wants to have a third child when you can’t actually squeeze three car seats into the back of a car.