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Phone carriers will evaluate the opt-in workflow. All options below do not bypass the need for IRB approval of SMS study communications.
Example Opt-In options are:
Opt-in by texting a keyword in the FIRST message sent to the participant
This works well for studies that are using SMS as their first point of contact or for recruitment purposes.
The first text sent to the potential participant must host both the opt-in and opt-out language.
Opt-in by online form
Opt-in by signing ICF (that notes SMS/ text messaging communications will be used)
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