NDWCSHAP Generator (by Lesserkuma)

This tool helps you creating your own NDWCSHAP access point. Any Nintendo DS, DSi and 3DS will auto-connect to these kinds of hotspots without the need of going through Nintendo Wi-Fi Connection settings. This feature was officially used at “DS Station” kiosks, likely from 2006 until 2020.

To create your own access point combination of SSID and WEP key, you need to specify a value called “apnum” which was used to distinguish between individual store chains and locations. This allowed developers to distribute location-based WFC content to their games, similar to Nintendo Zone locations.

⚠️ Please beware that NDWCSHAP access points rely on the very old WEP128 encryption which can be a security risk for your network.

If you use hostapd, add these lines to hostapd.conf:

channel=11
interface=wlan0
ssid=<SSID>
auth_algs=3
wep_default_key=0
wep_key0=<WEP KEY>
wep_rekey_period=300

Command Line Arguments

--apnum APNUM              generates SSID and WEP key based on apnum provided
--ssid SSID                generates WEP key and apnum based on SSID provided

Thanks

Some technical information was found at wmb-asm - NintendoSpot.wiki.