In a long setup, the market needs to be trading above the 21 EMA first. As the market retraces back to the moving average, day traders may be anticipating a turn higher from it. Therefore, if a buyer bar forms on the moving average it could be a sign of further buying momentum. However, a stop loss is always used to minimise losses in case the market turns the other way.
Security: Will your funds and personal information be protected? A reputable Forex broker, and a good Forex trading platform will have measures in place to ensure the security of your information, along with the ability to backup all key account information. They will also segregate your funds from their own funds. If a broker cannot demonstrate the measures they will take to protect you and your account balance, it would be best to find another broker.
When you're making trades in the forex market, you're basically buying or selling the currency of a particular country. But there's no physical exchange of money from one hand to another. That's contrary to what happens at a foreign exchange kiosk—think of a tourist visiting Times Square in New York City from Japan. He may be converting his (physical) yen to actual U.S. dollar cash (and may be charged a commission fee to do so) so he can spend his money while he's traveling.
Believe it or not, this question does come up from time to time, especially from anyone unfamiliar with the foreign exchange market. Unlike the futures markets, there is no central governing body nor any arbitration panels or clearing houses that control the foreign exchange market. All trade is conducted through credit agreements between individual members.
More specifically, the spot market is where currencies are bought and sold according to the current price. That price, determined by supply and demand, is a reflection of many things, including current interest rates, economic performance, sentiment towards ongoing political situations (both locally and internationally), as well as the perception of the future performance of one currency against another. When a deal is finalized, this is known as a "spot deal". It is a bilateral transaction by which one party delivers an agreed-upon currency amount to the counter party and receives a specified amount of another currency at the agreed-upon exchange rate value. After a position is closed, the settlement is in cash. Although the spot market is commonly known as one that deals with transactions in the present (rather than the future), these trades actually take two days for settlement.