SteveT,
There are a variety of systematic trading methods that require data but not charts.
Not a strategy that i'm employing, but as an example:
Let's say you believe that most 1% moves begin with a .25% move within a 5 minute period. You could get the numerical data to feed into a spreadsheet, create a macro that constantly checks for .25% moves on a rolling 5 minute basis, and signals an "alarm" when it does. This alarm could be your signal to enter an order.
My approach involves doing a variety of calculations on data, so rather than look at charts, i prefer to link the data directly into a spreadsheet which performs the calculations.