Common comparison error
Touching and crossing are not interchangeable in One touch option; written equality and Touch no touch decide.
GlossaryProducts & contracts
One-touch option
A barrier-style contract that settles successfully if price reaches the stated target before expiry.
Practical use
How to verify One-touch option
Read One-touch option together with No-touch option, Touch/No Touch, Binary option. The comparison must preserve the exact rule, value, state, and evidence described below.
A neutral example
Price prints 99.9998 beside a 100 level in One touch option. Stored precision and strict or inclusive wording decide the result, not rounded No touch option text. One touch option is distinguished here by one decisive fact: one qualifying reach of the target during the window can trigger success even if price later reverses.
Evidence path
Where to verify One-touch option
Use the source that governs the exact contract, account, entity, or platform state. A general definition cannot replace current broker terms.