The flash feature on smartphones is commonly used as a flashlight but is usually not that bright. If you are an Android user, ...

Discover how to build a simple DIY projector using everyday materials like cardboard and a small flashlight or laser pointer. This easy step-by-step tutorial guides you through crafting a homemade ...

Unlock the full potential of your smartphone flashlight with this easy DIY projector tutorial! Watch as we turn ordinary materials—just cardboard and a magnifying lens—into a powerful, focused light ...

I will quote a lot of times from this official document, see the full document here: https://developer.android.com/develop/connectivity/nfc/hce This app explains how ...