Which companies have no or optional name badges?
At least one place I worked, that was when they decided to get everyone official company name tags.
Every business that large has valuable data. If your business has valuable data, there is someone out there trying to steal it.
They aren't really there to tell people your name. Most people wear them on their waist so you can't read them. But they do identify you as someone who belongs, so security can chase you out if you don't have one.
Why not just put it in your pocket and introduce yourself with your name when you meet people? Unless your manager is anal about it, it seems like it would go unnoticed.
And yeah, obviously companies have swipe cards/ids. I think that differs from name tags
Only if you're in some lab environment do you need badges to open security doors.
