A picker finds an empty location, reports the shortage, places the tote in the marked problem area, and continues with the next order.
When this method works well—and when it does not
Works well when
- Every operational workflow
- High-turnover or temporary labor
- Processes with recurring supervisor intervention
- Automation tests that need safe backup method
Usually a poor fit when
- None—the scope should be proportional, but every process has problems
Show exactly what happens at each step
Write down actions that someone can see or confirm: what the worker does, what moves, who owns the next step, and what happens if something goes wrong.
- 1Problem occurs
- 2Stop
- 3Find expert
- 4Invent workaround
- 5Record incompletely
- 1Detect
- 2Classify
- 3Place safely
- 4Assign owner + clock
- 5Resolve + learn
Get these basics right before adding technology
- One named person owns the process, and everyone agrees what one task includes
- Current time, accuracy, problem, and volume numbers collected using written rules
- One named person corrects product and location information
- A written backup method and a clear path for getting help
If workers cannot reliably identify the item, order, or location, correct that problem before expecting new guidance equipment to improve accuracy.
Step-by-step procedure
- 01
Create a finite problem problem categories
- 02
Give each class a safe physical destination
- 03
Name authority, response time, and system status
- 04
Keep normal work moving where safe
- 05
Review recurrence and eliminate root causes
Information the process must track
For each task, decide what item or order is being worked, where it comes from, where it goes, how much is expected, how the worker confirms completion, what happens when something goes wrong, and which system records the final result.
Technical notes for the warehouse software or IT team
Use one unique task ID. Re-sending the same message should not create a duplicate move or pick. Keep a way to compare records and repair differences when messages are delayed, repeated, or missed.
Decide what workers should do when something goes wrong
Observe actual cases and repair the problem categories and prompts.
Age by owner, consequence, and next decision.
Make it faster and clearer than the workaround.
Run a controlled backup method and record checking and repair drill.
Numbers to watch
Before the test starts, write down what is counted, what it is divided by, when the clock starts and stops, what is excluded, and where the data comes from. Keep those rules the same through the test.
Test it on a small scale before a full rollout
Trial steps
- Choose one realistic area, shift, and order mix
- Watch the current method long enough to include normal work and a busy period
- Test the new method using exactly the same measurement rules
- Review every problem and worker workaround before expanding the change
What must be true before rollout
- The target output is maintained for one full, realistic shift
- Accuracy and problem recovery meet the written target
- New workers can follow the process without unwritten tips from experienced workers
- The backup method works, and the team can return cleanly to the normal process
Voodoo is one possible way to guide the work—not the answer to every problem.
Where it may help
Displays can mark dynamic problem positions, show ownership/status, and support acknowledgement or escalation.
See how Voodoo worksWhen to choose something else
The site and devices do not replace safety, quality, HR, or regulatory authority for specialized problems.
Read how recommendations are made