Use net volume to find areas of reversal. This is not meant to be used on its own, and requires others tools, but it is helpful in identifying possible points of entry. Area's with lots of market participants could signify a reversal, depending on the positions entered.
Edit the source code to suit the currency pair you are trading.
One example. After periods of high frequency or extreme selling, expect a small retracement upwards as longs have been stopped out and shorters have entered, making it easier for the currency pair to head upwards.
Please note that this should not be used without other tools.