I think you're right here. When you're emotionally invested in the result (you want to be pregnant, or you don't want to be), then a less than certain result ca

I think you're right here. When you're emotionally invested in the result (you want to be pregnant, or you don't want to be), then a less than certain result can force you to agonise over whether you're doing it right, or trust your own senses. A digital readout (assuming is pretty accurate) can remove this ambiguity. The other benefit is for anyone who has difficulty with colour perception, or is in a poorly lit environment. I assume the device can read the stip in pure blackness leaving little enivornmental light to cause confusion. But when it's all said and one, I bet this was created by the marketing department.