What is the ruling on buying and selling gold and silver electronically through an application that deposits gold or silver into the customer's account, with the possibility of receiving it later?

For selling gold for cash, actual or constructive possession must take place at the contracting session. There is no harm in transactions if this condition is met. The agent's possession of the gold or money is sufficient. When selling gold for gold, silver, or money, possession of both عوضين (countervalues) must be realized at the contracting session. The ruling does not change based on the purity (carat) or age of the gold. It is impermissible for a gold sale contract to be contingent on a matter or deferred to the future. The option of stipulated condition (خيار الشرط) is not valid in it, and gold sale contracts where both عوضين (countervalues) are delayed are not permissible. For selling gold bars for cash, possession of both عوضين (countervalues) is required at the contracting session. Constructive possession is achieved by designating the bar and enabling the buyer to dispose of it, or by taking possession of a certificate representing ownership of a specific and distinguishable bar.