First of all, let me say that I cannot vouch for these magnets. I have not used them and to be quite honest, this is the first time I’ve ever even heard of them.
However, I like the idea of them.
While my daughter is still a little young for something like this, I can see the appeal for children over that age of 3. I can remember when our oldest was that age and we would have her stand next to the car and put her hand on the side of the door, just to make sure she stayed put.
These magnets are the same idea, but they have an actual handprint for your kiddos to connect with. It seems like it would work well.
Parking Pal magnets retail for around $8 each. Through Mamasource, you can score a $24 voucher to spend at the site for $12. So you can basically buy 3 for the price of one and a half. Not a bad deal.