The indicator detects narrowing which should predict a move to a direction.
NOTE: You need to define in the indicator settings (Narrow percentage) the percentage between the upper and lower bands that would be highlighted.
For example: if you set 5%, the indicator will highlight the parts that the upper and lower bands are less than 5% compare the current price (usually close price, but you can define otherwise)
Use the Telson T8 to determinate the trend/direction of the move.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.