Paywall
A paywall is a method of restricting access to content via a paid subscription. Beginning in the mid-2010s, newspapers started implementing paywalls on their websites as a way to increase revenue after years of decline in paid print readership and advertising revenue. In academics, research papers are often subject to a paywall and are available via academic libraries that subscribe.
Firewall (film)
Jack turns to Janet. She helps him retrieve the phone with the picture of Cox's account information. Jack hacks into Cox's Cayman Island accounts and transfers the money away. He calls Cox using Liam's phone and they arrange to free his family in exchange for returning the money. During the conversation, Jack hears the family dog in the background, and realizes he can locate his family by the GPS tracking unit in the dog's collar. The signal leads him to an abandoned house. He tells Janet to call the police and approaches the house.