def sign_in(cache):
    """
    Input Account and Market, or press Enter for demo
    """
    print(
        """
        (BTS) litepresence1
        Resistance and Disobedience in Economic Activity
        is the Most Moral Human Action Possible
        -SEK3
        """
    )
    print("")
    print(sign_in.__doc__)
    print("")
    cache["account_name"] = input("account name: ").strip('"').strip("'")
    print("")
    cache["currency"] = input("    currency: ").strip('"').strip("'").upper()
    print("")
    cache["asset"] = input("       asset: ").strip('"').strip("'").upper()
    print("")
    if cache["account_name"] == "":
        cache["account_name"] = "abc123"
    if cache["currency"] == "":
        cache["currency"] = "OPEN.BTC"
    if cache["asset"] == "":
        cache["asset"] = "BTS"
    cache["pair"] = cache["asset"] + ":" + cache["currency"]
    return cache