Spain has security checks at their major stations for high speed trains including to go to France, but France does not

There are so many widely open train stations in France that securing only some of them would be a huge waste of time and energy while securing them all would be nearly impossible.

And I really don’t want to live in a country where boarding a train is as painful as boarding a plane. Millions of people are using train to commute, adding security checks would totally kill the train.

For what’s it’s worth it’s more of a bag scan rather than a full security check like at the airport. Certainly the full security check is not something I want to deal with but it wasn’t too bad. They only do it at the main stations in Spain and only if you’re riding the high speed trains, so I imagine if France did it then it would only be at TGV stops which are not so numerous