My Husband Registered His Mistress's Fingerprint on Our Smart Lock. So I Changed the Door—And My Life.

On the weekend, my husband invited his female colleague over for dinner.

When the three of us reached the front door, she reached out and pressed her finger directly against the biometric scanner of our smart lock.

The door beeped and clicked open.

I stood at the threshold, staring at her.

My husband glanced at me, his tone incredibly casual. "She’s been here a few times to drop off documents, so I registered her print. It’s just more convenient that way."

The colleague gave me a sweet, polite smile.