What are some Android lock screen apps that hide a device from thieves and intruders without requiring a password or PIN?

It is important to note that any lock screen app that hides your device from thieves and intruders without requiring a password or PIN may not provide adequate security. These apps may make it more difficult for someone to access your device, but they do not provide the same level of protection as a password or PIN.

That being said, here are a few lock screen apps that offer additional security features:

1. Hi Locker – This app allows you to customize your lock screen with various themes and provides additional security features such as fingerprint unlock and pattern unlock.
2. AcDisplay – This app replaces your default lock screen with a minimalist design and provides notification alerts that are hidden from view until you swipe to unlock.
3. Next Lock Screen – This app provides quick access to your favorite apps and allows you to control your music and settings from the lock screen. It also provides additional security features such as fingerprint unlock and PIN unlock.
4. CM Locker – This app offers a variety of lock screen themes and provides additional security features such as fingerprint unlock, pattern unlock, and PIN unlock.

It is important to remember that using a lock screen app does not replace the need for a strong password or PIN. These apps may provide additional security features, but they should be used in conjunction with a strong password or PIN to ensure the highest level of security for your device.