/Library/Image Capture/TWAIN Data Sources/ → /System/Library/Image Capture/TWAIN Data Sources/。Apple Image Capture uses a TWAIN software "bridge" TWAINBridge.app (found in: /System/Library/Image Capture/Devices/TWAINBridge.app) to access TWAIN Data Sources. This TWAINBridge software allows all Image Capture clients to access TWAIN devices transparently as if they were being handled by Image Capture native scanner drivers.