The 47-year-old actor said Jason Reitman's 'Men, Women & Children', which is on people's fears over new technology, left a horrific impact on him, said the Hollywood Reporter.
"As a parent, you realize that there's stuff out there that can be painful to everybody, and it's right there if you hit a button," he said on the sidelines of the Toronto Film Festival.
"It's a rough thing to watch as a parent, and you pray you're doing everything to protect your life and your family from going that way," Sandler added.
"We're so behind. I've got to suddenly get on these things before my daughter wants to be on Instagram or Facebook," Garner said.