Reverse IontophoresisNemaura Medical – SugarbeatMicroneedle – dermal ISFBiolinq UCSD -see AquilX | Lab in the Skin One drop Sensible Health Kilele Health IWel Health PKVitality SiBio Sensavita AllezhealthNeedle based Subcutaneous – ISFDexcon G6- Continuous Glucose Monitor Abbot Freestyle Libre CGM Medtronic CGM solutions A menarini Glucoday CGM Eyesense – Fluorescent producing enzyme based with Fiberoptic Needle