Fast answer
Support and resistance signals need level quality checks.
Before using a support or resistance signal, check how the level was drawn, which time frame matters, whether it is a zone or exact price, whether a retest is required, where the setup is wrong, and how the final result is recorded.
If the level was drawn after the move, it is not strong evidence for the original signal.
Level checks
What to inspect in a support or resistance signal.
Level source
Ask whether the level was marked before the alert and how many prior reactions support it.
Zone or price
Crypto levels often behave as zones, so the provider should explain the execution window.
Retest rule
Know whether the signal needs a touch, close, retest, rejection, or break before entry.
Invalidation
The call should say where support or resistance has failed and how that failure is logged.
Official context
Short-term chart calls can amplify behavioral risk.
Investor.gov notes that behavioral patterns such as active trading, momentum investing, noise trading, manias, and panics can undermine investor outcomes. Support and resistance signals should be reviewed with that risk in mind.
Review standard
Level-based calls should preserve before-and-after charts.
A reviewable record includes the pre-alert chart, level source, time frame, entry condition, invalidation, stop logic, update trail, and final status. After-the-fact chart lines should not be counted as source evidence.