Session 3: Photos, voice and your phone

You leave with: a receipt turned into a table you checked by hand, a voice note turned into a summary and a reply, and the three signs of an AI scam message.

Open the slides from class

Your phone is the scanner

Find three buttons in the AI app (the app, not the browser): the camera or photo button, the microphone button, and the share button. Every phone puts them somewhere different, so look for the word.

A good photo

Flat on the table.
Light from the side, so there’s no shine. No flash.
The whole thing in the frame.
Cover the card number and anyone’s name before you take the photo.

The prompt for paper

The 4 parts from session 1, plus one new line at the end:

I run a pastechi truck. This is a supplier receipt for my bookkeeping.
Make a table with: item, quantity, unit price, line total.
Put the subtotal, discount and total on their own lines under the table.
Don't guess. If you can't read something, write UNREADABLE.

Check by hand

Pick 3 lines and redo them on the calculator, then check the total. The total printed on the receipt beats the AI’s sum. Watch for returns, discounts and cash lines: those are where it slips.

To get the table into Google Sheets, ask: “Give me the table so I can paste it into Google Sheets.” If it all lands in one column, use Data > Split text to columns.

Exercise A: Receipt to table

Use Receipt 2 on Handout E.

Photograph Receipt 2 the way the photo rules above say.
Finish the half-filled prompt on the handout and send it.
Compare the AI’s table with the three rows already filled in. Then fill in the rest from its answer.
Check 3 lines by hand (the handout says which) and the total.
Paste the table into a Google Sheet and check the total with =SUM.

Bonus: crumple the receipt, put it in bad light, shoot it at an angle, and ask again. Does the answer change? What did it get wrong this time?

How scammers use AI

What changed: scam messages used to be full of spelling mistakes. In English and Spanish, AI fixed that. A voice can be copied from a short video someone posted. Ads can show a fake video of someone famous.

Slow down, call back:

Urgent, money, secret or a link: any one of them means stop and check before you do anything.
Hang up and call back on the number you already have.
Agree a family code word, and ask for it.
Never pay because of a voice note alone.
For an ad or a bank message, open the company’s own app or site yourself. Don’t tap the link.

Exercise B: Talk it out

Three ways to get a voice note in: attach the audio file (only some apps take it), tap the microphone and play the note out loud next to the phone, or type what it says. The checks are the same whichever route works.

Pick a track on Handout F:

Your own voice note. Record yourself for up to 60 seconds about something from your index card. Get it into the AI, then ask for a summary and a clean message to send. Your own voice only: never a customer’s voice note, or anyone else’s without their OK.
A photo from your own life. A flyer, a handwritten to-do list, a timetable, a price list. Turn it into a table, a summary or a translation. Same photo rules.
Nothing of your own? Use Jenny’s voice note from the class group, with Tia Mila’s facts from Handout F.

What never goes in: phone edition

Photos of IDs or bank cards.
Other people’s voice notes and faces.
Chat screenshots with other people’s names and numbers.
A customer’s voice note counts as their personal data.

Handouts

Do-now card

While you wait (3 minutes):
1. Open the AI app on your phone (the app, not the browser).
2. Find the camera or photo button and the microphone button.
3. Tap the microphone and ask out loud:
   "Give me three tips for taking a clear photo of a receipt."
Got an answer? You're ready for tonight.

Handout E: Receipt to table

Receipt 1 (worked example, made up)

        CARIBE FRESH SUPPLIES
   Receipt 20417     28-11-2026  07:42

Flour, 25 kg bag      1 x 38.75     38.75
Gouda cheese, 1 kg    4 x 27.00    108.00
Chicken thighs, 5 kg  2 x 61.00    122.00
Onions, 10 kg bag     1 x 38.50     38.50
Cooking oil, 4 L      3 x 17.25     51.75
Paper bags, 100       2 x  6.50     13.00
                     SUBTOTAL      372.00
         DISCOUNT 5% (member)      -18.60
                        TOTAL      353.40
CARD  5310 **** **** 4417 (made up)

Receipt 2 (exercise A, made up)

      ISLAND PARTY SUPPLIES
   Receipt 7731      27-11-2026  16:05

Napkins, pack of 200      2 x  4.25      8.50
Paper plates, 50          3 x  6.75     20.25
Foil trays, large        10 x  1.95     19.50
Plastic forks, 100        1 x  5.40      5.40
Ice, 5 kg bag             4 x  3.50     14.00
Gas refill, 9 kg          1 x 42.00     42.00
RETURN foil trays, small -2 x  1.25     -2.50
                           TOTAL       107.15
                           CASH        120.00
                           CHANGE       12.85

Your prompt (finish it):

I am ______________________ (who you are)
This is a receipt for ______________________ (what it's for)
Make a table with: item, quantity, unit price, line total.
Put the total and the payment lines under the table, not in it.
If you can't read something, ______________________

Check by hand:

[ ] Foil trays, large:  10 x 1.95 = ______
[ ] Ice:                 4 x 3.50 = ______
[ ] The return line:   did the AI make it a minus?  yes / no
[ ] My total ______  = the receipt's total 107.15?   yes / no
[ ] In Google Sheets, =SUM( ___ : ___ ) = ______

Handout F: Talk it out

Tia Mila’s facts (paste this in with Jenny’s voice note):

Tia Mila's Pastechi Truck, Noord. Open Monday to Saturday 6:30 to 11:00,
or until sold out. Closed Sunday.
Pastechi: cheese ƒ3.50, chicken ƒ4.00, beef ƒ4.00 (tuna ƒ4.00, Fridays only).
Johnny cake ƒ3.00. Fresh juice ƒ5.00.
Party tray: 25 mini pastechi, one filling per tray, ƒ45.
Order trays on WhatsApp at least 24 hours before. Pickup only, no delivery.
Cash or card.

Your prompt (finish it):

This is a voice note from ______________________ (me / a made-up customer)
1. Write what it says in 3 bullet points.
2. List anything that changed or isn't clear.
3. Draft a message to ______________________ in ______________ (language),
   at most ____ sentences, tone: ______________________.
Use only what's in the voice note and the facts I give you.

Check it:

[ ] Did it catch every change of mind?
[ ] Is every number, day and time right?
[ ] Did it add anything that wasn't said?
[ ] Would I send the message as it is?   yes / after one change / no
This used to take me ____ minutes. With AI: ____ minutes.

This week

One photo or voice task from your index card. Bring the result and the mistake.
For demo night: pick your capstone from your index card, the task with the most hours and the lowest risk. Write 5 to 10 facts your assistant will need (hours, prices, rules, what you don’t do) on the top half of Handout G (on the session 4 page).
Send Victor the first names of up to 2 guests, two days before session 4.