Graftholders

For companies selling a device under their own brand, made by someone else

What your product really costs over the next five years

Seven questions about your own numbers, and you see the total straight away: what you pay your supplier, what changes cost you, what the price increase is worth. Then the comparison with the two other possible paths.

Run the calculation Free · seven questions · two minutes · result on screen straight away

The calculation compares three paths

  1. 1
    Stay with your supplier

    What you pay over five years, purchases and changes, using your numbers.

  2. 2
    Rebuild everything from scratch

    The public figure published by a platform vendor, quoted as their estimate.

  3. 3
    Start from a ready-made base

    Your product rebuilt on what you already sell, handed over documented and maintained.

Free calculation · 7 questions · 2 minutes

Your numbers, the five-year total

Units sold, price per unit, changes in a year. No technical data: only what you already know by heart. The total appears on screen straight away.

The 7 questions of the calculation

    Convenienza
    Condizioni
    Tempi

    The three paths compared

      Book 30 minutes with an engineer

      Who is behind the check

      Who publishes it

      Graftholders designs firmware, infrastructure and security for connected devices, from silicon to the field.

      Who reads the answers

      An engineer from our team, the same person who would lead the work.

      Graftholders, Prata di Pordenone (PN), Italy · VAT IT01942910934

      It is written for companies selling a connected electronic device under their own brand, designed or developed by someone else. Teams that have run everything in-house for years will find little new here.

      Projects delivered

      Engineering projects we have delivered

      Devices, on-board software and infrastructure, with the project in the client’s name.

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      Three paths

      When the product has to change, there are three options

      Carry on as you are

      No upfront investment. Timing, priorities and the price of changes stay with your supplier, while your customers come to you for answers.

      Build your own team

      Full control at the end of the road, with the people and the time it takes to get there.

      Start from a ready-made base

      That is TemperCrate, the base we built: identity, updatability and traceability come ready-made, the rest is developed on top, and the project is handed over to you documented and maintained.

      Unlike platforms that hold your update signing keys for you, with TemperCrate the keys stay with you: you decide which updates your devices accept.

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      What is inside a product

      What the device you sell is made of

      A connected device is not one single thing. It is five, and whoever holds them decides who can work on it.

      Design

      Schematics and board layout, a bill of materials with approved alternates, files to manufacture and test.

      The prototype

      The physical board, tested and validated, with the test results: the step that turns a design into something you can manufacture.

      The on-board software

      The code running on the device and the procedure that turns it into the installed program, with the list of software components and their licences.

      The update base

      How each device is recognised and updated remotely, and the keys used to sign those updates.

      Plus the documentation that holds it together: manuals, technical file, production procedures. When we say whole product, we mean these five items handed over to you.

      The item the calculation does not see: updates over the years

      The Cyber Resilience Act, the EU regulation on products with digital elements, places cybersecurity requirements on the manufacturer covering design, development and maintenance, and requires vulnerabilities to be handled throughout the product lifecycle. Whoever sells the device under their own brand is the manufacturer, and the product carries the CE marking.

      The dates, from the European Commission: the regulation entered into force on 10 December 2024, reporting obligations apply from 11 September 2026, and the main obligations from 11 December 2027.

      For your total it means one thing: the device has to be updated over the years, and today every update is a request to your supplier, at a price and on a date they set. It is the item the calculation leaves out, and the one we size on your product during the call.

      Source: European Commission, Cyber Resilience Act, page updated 22 June 2026.

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      Supply risk

      Two things that can happen, and what they mean

      Your supplier raises prices

      The price per unit sits in the five-year total and multiplies across every unit you sell. Without the board design you cannot ask another manufacturer for a quote, so the negotiation happens with one counterpart only.

      Your supplier stops supporting the product

      The device keeps working and keeps selling. What stops are changes and updates, because files, code and keys stay where they are. With the project in your hands, that work goes to whoever you choose.

      What changes when the project is yours

      Holding the files does not force you to change supplier: it puts you in a position to do so. That possibility alone moves price and timing, even if you stay with the same partner.

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      Frequently asked questions

      How the calculation works

      The calculation uses only your numbers: units sold in a year, price paid per unit, last year’s increase, number and cost of changes. It projects them over five years and places them next to the two other possible paths, without adding estimates of ours.

      Why five years?

      It is the typical life of an electronic product line before a major revision, and it is the period over which a connected device has to be maintained anyway. Over a single year the differences between the three paths do not show.

      Where does the figure for path two come from?

      From an estimate published by Northern.tech in 2020: 150,000 dollars for the update base alone built in house, and 750,000 for a complete solution. We quote it as their estimate, from an interested party, and it covers on-board software only.

      And the cost of path three?

      It depends on your line: units, board complexity and how much of the current product can be reused. We give you the order of magnitude during the 30 minutes, on your own case.

      Does the project stay ours?

      Yes, that is the point of how we work: we hand over and step away. What the handover includes is covered in the call.

      Do we need to hire engineers?

      No. We do the work, you receive the project and the documentation, and long-term maintenance is agreed separately.

      Can we stay with our current supplier?

      Yes. Holding the project does not force a change: it puts you in a position to make one, and that is what moves price and timing.

      How we work

      From the calculation to the project in your hands

      1. The calculation

        The seven answers become the five-year total for your product line.

      2. The review

        Thirty minutes with one of our engineers on your numbers, with a written outcome that stays with you.

      3. The path

        You request from your supplier what can be obtained, and the rest is rebuilt on the product you already sell.

      4. The handover

        Project, documentation and infrastructure in your name, with long-term maintenance agreed separately.

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      Two minutes, and you have the total

      Seven questions about numbers you already know. At the end you see what your line is worth over the next five years and how it compares with the two other paths. Everyone who completes it gets a review by a senior engineer, the same person who would lead the work.

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