I don't think a sensor, a chip or a camera inside a puck is the answer.
The puck structure will change.
It may seem like a small change but players will probably experience a completly diffrent 'feel'
Remember in tennis when (i think it was in Madrid) they had the idea to change the regular red clay to blue clay? Small change, big difference.
EDIT: yes, Madrid
http://www.dailymail.co.uk/sport/ten...ay-courts.html
And how much would a puck 2.0 cost?
How many game pucks are used during a game? At least 5 I think.
So if a puck goes into the stands, security has to come and take the puck from a 4 year old girl and replace it with a regular puck?
Or if Ortio scores his first NHL goal they present him the puck like 'Congratulations with your fist goal Joni, here is the puck! Well, it's not
the puck, it's a puck. Just a regular one... I think. I don't know. Good goal though!'