He swore the stress at work was wrecking his sleep. Then I opened the app his ring fed every night, and the charts told a different story.

He swore his earbuds were lost in a coworker's backseat. I opened one app to help him find them. They were sitting somewhere they had no reason to be.

I am barely over five feet tall. So the morning I climbed into my husband's car and nearly fell to the floor, I knew the seat had been set for someone else.

Our shared ride account had a perfect rating for six years. Then I woke up to find it wrecked overnight, and a charge for a trip I never took.

He swore he slept through the whole afternoon. His fitness tracker told a different story, minute by minute, while I made us dinner downstairs.

He swore he had left his missing earbud at the gym. The tracking map showed it lying perfectly still, three hours away, in a room with a fireplace.