This is one of the quickest techniques for prototyping circuits, as well as an efficient and reliable way of making flat and flexible circuitry. Copper tape andtapes are relatively affordable and comes with or without conductive adhesive. When using copper tape with conductive adhesive, connections between separate pieces of tape can be made by overlapping individual pieces, but these connections aren’t the most reliable, especially over time. Soldering recommended.
ENSAD workshop poster >> http://hlt.media.mit.edu/workshops/ENSAD_2011/?page_id=16