Here is the “long lost” Appendix A to Chance Sweepings. Attempt here was to show a transaction with a customer as described through the entry of PLU codes. I will think of this as a fairly successful experiment and have wondered if a similar technique could be applied to computer use — really slowing down what we do when we type.
APPENDIX A: 7,2,4 “plu”
Right hand, index finger: press 7,2,4, “plu”; press 9,2,4, “plu”; press 5,0,0, “plu” (see total, which is too large, and suspect I haven’t closed out the previous sale)
Right hand, index finger: press “void”, 7,2,4, “plu”; press “void” 9,2,4, “plu”; press “void”, 5,0,0, “plu” (see my fears were ungrounded –the previous total was correct– and so I reenter the sale).
Right hand, index finger: press 7,2,4,”plu”; press 9,2,4,”plu”; press 5,0,0,”plu”; (then he says he wants a cookie) press “cancel.”
Right hand, index finger: press “tax one”, 7,2,4,”plu”; press “tax one” 9,2,4, “plu”; press 5, 0, 0,”plu”; press 9, 0, 0,”plu”; press (though you don’t really need to) “subtotal”.
(The total is 8 something. 8.46. It is often remarked that the price is modest relative to the number of buttons pushed.)
.i`` * ^ / . . . . . ` `~ 