Those who don't spend enough time watching computer screens at work, however, can see more of them in Firewall, starring grumpy Harrison Ford as the head of digital security for a mid-sized Seattle bank.
There are other plot holes (four days indoors and the dog doesn't have to go?) but, dispiritingly, Firewall is one of those movies where every detail in the first act is designed to pay off by the third.
Harrison Ford needs a better agent. Or a sharper pair of reading glasses for perusing scripts. He just seems to keep choosing the same tired heroic roles, and ends up coming across as a caricature of his younger self.
Director Richard Loncraine and screenwriter Joe Forte run out of ideas. So they turn to the action-movie mainstays -- guns, fisticuffs and explosions -- in an over-the-top showdown that tries to make up in mayhem what it lacks in credibility.
Firewall is an ingenious attempt to update an old plot with new technology, and it is made with competence, skillful acting, and the ability to make us feel cleverer about digital stuff than we really are.
Firewall is flawed, but that didn't prevent me from enjoying it for what it is, nor will that prevent me from recommending it to those who enjoy a thriller with enough of the right ingredients to provide a couple hours of escapism.
Both dutifully formulaic and brazen in its willingness exploit in-jeopardy elements just short of the horror-film threshold, such barriers might prevent audiences from savoring an otherwise old-fashioned thriller.