I always weighed daily while I was on Cambridge, and still do in maintenance. It's recommended for maintenance anyway.
It's only a terrible habit if what you read on the scales makes you come off plan (whether it's a good reading or bad), or depresses you.
Whatever you do though, only take the once a week reading as the formal one, and never, judge your success by what a daily reading on the scales say.
Your success will come from how well you keep on the diet, not from a piece of machinery....digital or otherwise.