DIY Bat-Signal is the coolest way to get someone’s attention

Communication is easier than ever, thanks to digital technology. Want to reach out to someone? Call their cell phone, send them an instant message, direct message them on social media, ‎send a FaceTime request, or even write them an email. But what happens when your outreach goes unanswered and you desperately need to get someone’s attention? Well old chum, that’s when you use a high-powered flashlight and a Fresnel lens to blast their personalized signal into the sky, Batman style. In a recent video, YouTuber NightHawkInLight demonstrates how to construct your own personal Bat-Signal.