Which Windows application will work to read cards with an ASK brand?
That sounds like a LF RFID reader (125KHz), is that so? Those readers usually have keyboard emulation (like barcode readers). That means that any Windows App will be compatible, since the reader will send keystrokes to the OS. If that is not the case, I would just program a wedge app. Ive done that even for UHF readers. That app would communicate with the reader, and then send the keystrokes to any active window.