Weight is not a dead giveaway when it comes to discerning the amount of hydrocarbon gas that remains in your canister. The App-Enabled Propane Tank is a smart solution; it keeps the head barbecuer in the loop about how many more hot dogs can be cooked before the stove will be out of action.
Anthony Reddington has put forth a couple of proposals for the Quirky product, and both of them involve the design of a ring-shaped base. This would gather information about the contents of the BBQ container and indicate its findings by a system of illuminated LEDs. One version of the App-Enabled Propane Tank incorporates an external control unit that's much more accessible to the user, especially where changing the batteries is concerned.