[nemomarx]

For an office door, why not a key card or lanyard badge or whatever? A code? I feel like you could use something easier than an app too.

[SoftTalker]

You're in a rush in the morning and you leave home without your badge.

Happens to me at least once a month. But I almost never don't have my phone.

[iamnothere]

Key cards/badges don’t have GPS in them and can’t keep tabs on you outside the office.

[eichin]

it's sold as harder to copy (and easier to revoke when you're doing layoffs - which shouldn't have been a really challenge for card-based systems, they're just old and didn't keep up.)

[bigfatkitten]

Neither of these are challenges at all for semi-modern card systems.