I use a similar technology. It works by depositing pigments via capillary effect from a reservoir conveniently held in the body of the input device. The pigmen

I use a similar technology. It works by depositing pigments via capillary effect from a reservoir conveniently held in the body of the input device. The pigments remain on an indexable surface, which is collected together with many other such surfaces. Searches, if the correct keyword is known, can take a couple of seconds. The time between recharges is amazing, and to make a write requires a recharge every month or so. To actually retrieve information, it requires no charge at all! Unfortunately, once the memory is full, you need to replace the storage device at a cost of about $10. I have to do this once every three months, but you can afford several and keep them aside. It's also really easy to tell when you're approaching your memory limit. I'd say another drawback is a lack of backlight, but the ReMarkable doesn't have one either.