Common comparison error
Touching and crossing are not interchangeable in Double one touch option; written equality and No touch option decide.
A fixed payout is triggered if either an upper or lower barrier is reached during the observation period.
Touching and crossing are not interchangeable in Double one touch option; written equality and No touch option decide.
Read Double one-touch option together with Double no-touch option, No-touch option, Binary option. The comparison must preserve the exact rule, value, state, and evidence described below.
With spot 100, Double one touch option uses lower 95 and upper 105. A path touching exactly 105 tests equality, quote side, monitoring frequency, and Double no touch option. A reviewer labels the case Double one touch option only after showing that reaching either the upper or lower level during the window can trigger the fixed payout.
Use the source that governs the exact contract, account, entity, or platform state. A general definition cannot replace current broker terms.