This work introduces a new concept to simplify and perform heat flux measurements from hot surfaces more efficiently, relevant for aluminium cells as an example. Realizing that the wall material stores information on the flux, the idea is to use transient thermal data in combination with a localized air-jet that offsets the temperature on the surface from which the heat flux should be measured. The temperature response in combination with the energy transport (flow amount and temperature) will form a digital signature depending on the material and the heat transport through the wall. The observed behaviour/signal can then be utilized to obtain information on the surface heat flux. The concept was verified via simulations, and a first prototype was built to evaluate the method physically. Analyses so far show significantly shorter time to perform such measurements, as well as equal or perhaps even better accuracy. The ambition is now to develop a robust system where the measurements can facilitate heat flux estimations on the fly and push the results directly to the cloud, improving data handling further.