Pleasantly surprised by this reader. It's simple and cheaply made, but it does the job. It behaves like a keyboard where you click in a text field and enter scan and card data, similar to some barcode readers. Please note that this will not work with USB 3.0 ports on modern mobile phones. If you want to use this along with a new phone, it won't work.
5-in-1 USB Camera Connection Kit with SD TF Card Reader, 3.5mm Headphone Jack, and Charging Adapter for iOS 14 Devices - Compatible with iPhone 12 Pro and iPad - SD Card Reader USB Camera Adapter with OTG Functionality
11 Review
High-Speed Transcend TS-RDF5K USB 3.1 Card Reader for SDHC/SDXC/microSDHC/SDXC Cards - Black
11 Review
Neewer Black Memory Card Storage Holder - Waterproof, Anti-Shock with 14 Slots for Micro SD, TF, CF, SD and XD Cards
12 Review
IDENTIV USB Smartfold Type C SCR3500C
11 Review