Enter Netagio, which claims to have launched Europe's first free digital currency "cold storage" vault, offering gold standard offline storage for Bitcoins.
This sets a limit to deep moves into negative territory, but small forays are feasible because holding currency entails storage costs.Imposing negative deposit rates brings two possible advantages.
Mr. Allaire also said his company, which is based in Boston, will protect its customers' bitcoin by creating "offline reserves" — batches of the digital currency on physical storage devices, like a hard drive, not connected to the Internet.
Hydrogen as an energy currency, carrier and storage medium may be a key component of the solution to problems of global warming, poor air quality and dwindling reserves of liquid hydrocarbon fuels.
Cohen says the long term threat to digital currencies is safe storage.
He made the cards the size of United States currency, to fit in storage files and other equipment used in banks.
The company, which handles trading, merchant processing and storage for the currency, is based just outside Bangalore in Tumkur, India.
The biggest logistical problem is managing the collection and storage of the old currency".
Within the building there were passenger related facilities including separate waiting rooms for first, second, and third class passengers, a booking hall, luggage storage space, and a currency exchange.
In addition to the printing cost, if we were to add the cost of storage and maintaining these currencies through ATMs alone, the cost of printing and distributing cash constitutes about 0.2% of India's GDP.
