Modern biosensors mostly use the standard printed circuit board substrate, which is physically incompatible with irregular-surface applications. The following paper is a characterization of an experimental inkjet-printed sensor that circumvents the problem of rigidity by using a highly flexible substrate while also benefiting from low fabrication costs, low power usage, and environmental friendliness. The sensor is a 4x4 grid of aluminum-doped zinc oxide piezo-sensitive nodes inkjet-printed on paper-based substrates. The tests performed show nodes are capable of responding to applied pressures of over 540 PSI. Notably, they exhibit sensitivity to heat and humidity without shielding measures, making it more useful for physical therapy. Power usage of the device is shown to be as low as 5 mW.