Although traditional 3D fluorescence spectroscopy is a powerful analytical technique, it is also notoriously slow, making it unideal for studying kinetics. Our paper presents a much faster way to collect 3D fluorescence measurements, using Hadamard 'barcodes' to encode a white light source and the corresponding fluorescence signal. In this work, we used a submersible fiber-probe to study the kinetics of both spinach degradation in acid, and the thermal isomerisation of rhodamine B.