VivoKey Apex Flex
Experimental implanted electronic identification or secure-element hardware
Keep in mind Manufacturer states its finished implants are not government-certified for implantation or use inside the human body.
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Lowest recorded store prices take priority over announced or launch prices, within the selected source market. Currencies use the dated EUR reference rates. Deposits and recurring charges are excluded from price order; missing prices stay last. Original price records remain visible.
At a glance
The differences that matter
VivoKey Spark 2
Experimental implanted electronic identification or secure-element hardware
Keep in mind Manufacturer states its finished implants are not government-certified for implantation or use inside the human body.
Published specifications and documented constraints. See the full comparison below for prices and sources.
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| Frontier & researchAdd a model |  |  |
|---|---|---|
| Prices · all markets | $349 USD≈ €312 EURECB 2026-10-12US · Store price · Stock and delivery not verified 1 offer records & sources$349 USD≈ €312 EURECB 2026-10-12 US · Store price Stock and delivery not verifiedVivoKey VivoKey Apex Flex hardware Manufacturer US product price for the implant configuration without reader/programmer add-ons. Professional placement cost not included.Check merchant offer ↗Price source ↗ Checked 2026-10-12 | $50 USD≈ €45 EURECB 2026-10-12US · Store price · Stock and delivery not verified 1 offer records & sources$50 USD≈ €45 EURECB 2026-10-12 US · Store price Stock and delivery not verifiedVivoKey VivoKey Spark 2 hardware Manufacturer US product price for the implant configuration without reader/programmer add-ons. Professional placement cost not included.Check merchant offer ↗Price source ↗ Checked 2026-10-12 |
| Designed for | Experimental implanted electronic identification or secure-element hardware ↗ | Experimental implanted electronic identification or secure-element hardware ↗ |
| Form factor | Subdermal electronic transponder ↗ | Subdermal electronic transponder ↗ |
| Chip Platform | JCOP4 / Java Card3.0.5 ↗ | Not applicable to this category |
| Application Memory | 83,872 bytes EEPROM ↗ | Not applicable to this category |
| Cryptography | RSA, ECC, AES and3DES applets ↗ | AES128 challenge-response ↗ |
| Software Provisioning | Fidesmo applet deployment ↗ | Not applicable to this category |
| Payment | Not supported by Apex Flex ↗ | Not applicable to this category |
| Dimensions | Narrow8x28 mm; Module14x35 mm; Spectrum22x1.9 mm disc; one family profile ↗ | 2.1x14 mm ↗ |
| Construction | Flexible biopolymer encapsulation ↗ | Cylindrical glass package ↗ |
| Operating frequency | Not applicable to this category | 13.56 MHz ↗ |
| Nfc Standard | Not applicable to this category | ISO14443A / NFC Type4 ↗ |
| Data Storage | Not applicable to this category | No general-purpose user-data storage ↗ |
| Function | Not applicable to this category | Cryptographic digital-identity authentication ↗ |
| Availability | Manufacturer US product price for the implant configuration without reader/programmer add-ons. Professional placement cost not included. | Manufacturer US product price for the implant configuration without reader/programmer add-ons. Professional placement cost not included. |
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| Editorial pick & release | No editorial ranking recorded | No editorial ranking recorded |
| Evidence | Manufacturer source Checked 2026-10-13 | Manufacturer source Checked 2026-10-13 |
Battery claims use different conditions and are not a controlled benchmark. “Not verified” is an evidence gap, not a missing feature. Prices are dated regional snapshots. Deposits, bundles and historical launch prices are labelled. Brightness measurement methods and battery workloads vary by manufacturer.