EL Tech vs SidecarBridge

EL Tech is the essential mobile tool for airport maintenance personnel, technicians, and field engineers responsible for keeping ASOS, AWOS, and NEXRAD systems operational. Access live ASOS surface observations and NEXRAD radar data in real time to monitor equipment health, detect anomalies, troubleshoot issues, and maintain high system uptime — all from your iPhone.

SidecarBridge turns your iPhone or iPad into a private local viewer and remote-control surface for your Mac. Pair once with the companion Mac app, then connect over the same Wi-Fi or a nearby peer-to-peer link. View your desktop and control it with touch, a trackpad, Magic Keyboard, or Apple Pencil. FEATURES • One-time-code pairing with encrypted local sessions and remembered trusted devices • Direct local-network and nearby peer-to-peer connection paths • Adaptive, hardware-encoded Mac screen streaming with quality and frame-rate controls • Touch and trackpad gestures: click, drag, scroll, pinch-to-zoom, and left/right/double click • Standard and special on-screen keyboard controls, with hardware keyboard support • Chinese/English input switching and common modifier/navigation keys • Encrypted file transfer with visible transfer progress and an in-app file area • Recovery after short app switches or network stalls PRIVACY AND REQUIREMENTS Both devices need SidecarBridge. The Mac companion requires Screen Recording permission to stream the display and Accessibility permission for remote input. Sessions stay on your local or nearby link; SidecarBridge does not relay your screen through a cloud server. SidecarBridge mirrors the Mac's main display. It does not create a native extended display and does not bypass Apple's security, code-signing, device-management, or App Store protections.