Prevent errors through misidentification of patients and their gametes and embryos with Matcher electronic witnessing system from IMT International. Matcher IMT is a barcode-based witnessing, workflow scheduling, labelling and traceability system, specifically created for donor banks and IVF clinics. Matcher offers complete electronic traceability, recording the ‘who, what, when and where’ at each step, including photographs of all procedures occuring during a cycle of treatment.