Answer :
If you have a digital ink pen you would never run out of ink.sadly you would always have to have a device with you to use it.really it all comes down to if you use a pen enough to have its ink go away
ANSWER: There are many ways how the task is made efficient by Digital Ink Pens.
1) Digital Ink Pens will never run out of ink as they do not use ink at all for writing.
2) Digital Ink Pens can be used to take notes on any device such as mobiles, tablets etc. without the need of any paper.
3) As these pens do not use any paper for writing there will be no worry of losing any paper after taking notes on it.