Password managers largely assume that you personally own or control all the devices you login from. The problem is what if you want people to be able to login

Password managers largely assume that you personally own or control all the devices you login from. The problem is what if you want people to be able to login from multiple devices or your colleagues devices? This frequently comes up in business and personal contexta eg.login and show someone something on a device not yours. Normal office folks don't carry around their work laptop wherever they go unlike developers. I never carry laptops to meetings unless I'm presenting though I occasionally do development. I don't carry my laptop when meeting friends or relatives. You'll then need an internet synced password manager with a web interface because you can't install programs on other people's laptops and it introduces a pre-step in the middle of the meeting any anyways you are trusting all passwords in the cloud. You could come up with more secure solutions like do client side decryption using symmetric keys but now you have a login step and a decryption step before you even use the password. Basically this is why password managers don't really work for normal people - there is no good workflow when you need to use devices other than the ones you personally control. Two factor authentication using fingerprint with mobile phone trends to be much better because generally people carry their mobile phones around and it's one touch. I personally use my own algorithm that lets me create unique passwords with little mental effort for each use case.