Amazon.com: WiFi SD Card Adapter for TF Card, SDHC TF Card to WiFi SD Card Adapter Sharing Photo Video Music for Camera Smartphone Tablet, Up to Connect 3 Devices, Plug and Play :
Generic WiFi Adapter (SDHC) using the WIFI@SDCF app [Dxingtek/Keytech] | Jay's Technical Talk
FYSETC SD-WIFI/SD -WIFI PRO with Card-Reader Module run ESPwebDev Onboard USB to serial chip Wireless Transmission Module
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Turn an $11 microSD card reader into a WiFi router - Liliputing