Some questions about the bitcoin

[Jochen]

I think bitcoin is in many ways a brilliant plan, but i stay with some questions and hope u guys can answer them  .

1) Safety:

I read alot of people who get their coins online and lose all of them by hackers. Blockchain.info(also),inputs.io,... .
I can maybe be wrong, but i think that its better to have 2 wallet's. Example: u got 10 bitcoins and 9 bitcoins you put on your wallet that u don't use and just put offline on some USB's/hard-disc's that is encrypted, and u only use it online for large transactions like a house,car,..., and 1 wallet with 1 btc left, you also put offline and bring online for smaller transactions like buying food,drinks,... . The problem is that you need like 3 usb's,hard disc backup's for maximizing your safety and i don't think people older than 30-40 will do this fast.. They are used to the bank, paper money(usd,euro),... and alot of them don't trust the bank anymore, but they also don't(for this moment) trust the system of bitcoin because its new/confusion/.. .How do you guys think about this?

2) fluctuations:

The good thing for investors now, is that bitcoin is growing exponentially the last few months, but also has many drops in 1 day. Its about 100$ in 1 day sometimes.. How can the economic system and people use the bitcoins with such a fluctuation? Or do you guys believe this will be much more stabilized if the hype around the media has lowered and won't fluctuate as much in 5-10 years?

3) Wallet:

Are their any cards(like visa,mastercard) that are made already, or can be made for easy use in shop's etc and how will that work(QR reader?)? The use of mobile wallets and desktop wallets are great, but if you go to a shop without your mobile, u can't make a payment with the bitcoins.

Grtz

[DannyHamilton]

Example: u got 10 bitcoins and 9 bitcoins you put on your wallet that u don't use and just put offline on some USB's/hard-disc's that is encrypted, and u only use it online for large transactions like a house,car,...

A paper wallet is easier to create and probably safer.

, and 1 wallet with 1 btc left, you also put offline and bring online for smaller transactions like buying food,drinks,...

Certainly.  You should only keep in your easy to access wallet the amount that you'll need for daily use.  Just like you only keep in the physcial wallet in your pocket the amount of cash that you need for daily use.  I doubt you carry your entire retirement savings around with you every day.

The problem is that you need like 3 usb's,hard disc backup's for maximizing your safety and i don't think people older than 30-40 will do this fast.

No.  Just a few paper printouts.  Bitcoin is still VERY new.  This will get easier and more convenient eventually.

They are used to the bank, paper money(usd,euro),... and alot of them don't trust the bank anymore, but they also don't(for this moment) trust the system of bitcoin because its new/confusion/.. .How do you guys think about this?

Bitcoin won't be new forever.  It will become less confusing as it gains use in the world.

has many drops in 1 day. Its about 100$ in 1 day sometimes.. How can the economic system and people use the bitcoins with such a fluctuation?

Are you suggesting it isn't possible to use bitcoins when the exchange rate is volatile?  Um. People already do use bitcoins, so clearly it isn't a problem.

Or do you guys believe this will be much more stabilized if the hype around the media has lowered and won't fluctuate as much in 5-10 years?

Absolutely.

Are their any cards(like visa,mastercard) that are made already, or can be made for easy use in shop's etc and how will that work(QR reader?)?

Not yet.  Bitcoin is still VERY new.  I'm almost certain that some entrepreneur/innovator will create such a system in the future.

[msc]

How can the economic system and people use the bitcoins with such a fluctuation?

The fluctuation should die down in the future, but this isn't really a problem for acceptance.  You just need check the exchange rate at the time of the transaction, and set the BTC price accordingly.  It does mean that in a store, items still need to be priced in fiat.  But they are anyway.

It is a problem for exchangers.  If I promise to sell you 1 BTC for $1000, and I wait to get your money before I purchase that BTC from someone else, then I might have to pay $1200, and still get only $1000 from you.  This would seem to be the problem at Coinbase.  To solve that, what you do is don't offer to sell BTC until you actually own it or have control over it.