PHP talking to hardware at client PC?

[Man-wai CHANG]

> I wouldn't be using a PC running Windows for my POS application,
> but would be running a Linux box so this is easy.

the POS solution worked because the PHP codes run on the same PC that's
connected to the cash register. What if you use a remote server to feed
javascript+html+xml codes to the PC connecting to the cash register?

Should the cash register PC trust the codes sent from the Linux server?
If yes, then why isn't there a documented way in the DOM of the browser
for accessing hardware devices at the browser machine? M$ get around
this by the ActiveX whatever controls...

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