Described herein are apparatuses and methods that improve conductive communication between an external programmer and an implantable medical device (IMD) that is implanted within a patient. In an embodiment, an auxiliary apparatus of the present technology includes a first auxiliary skin electrode configured to attach to skin of a patient, a second auxiliary skin electrode configured to attach to skin of a patient, and an electrically conductive path extending between the first and second auxiliary skin electrodes and interrupted by a capacitor. The auxiliary apparatus is distinct from the external programmer and the IMD, and can beneficially be used to improve conductive communication therebetween without making any modifications to the external programmer, and without making any modifications to the IMD.
