Does your voice sms script still work for you? I'm getting a 403 when it tries to log in.

I've had an alias to this command for ages to get a similar effect:

echo $((`ioreg -c IOHIDSystem | sed -e '/HIDIdleTime/!{ d' -e 't' -e '}' -e 's/.* = //g' -e 'q'` / 1000000000))