Dangerous Things flexSecure
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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At a glance
The differences that matter
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.
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 verifiedDangerous Things Dangerous Things flexSecure 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 | $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 |
| 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 ↗ | JCOP4 / Java Card3.0.5 ↗ |
| Application Memory | 167,736 bytes EEPROM ↗ | 83,872 bytes EEPROM ↗ |
| Dimensions | Narrow8x28 mm; other antenna configurations available ↗ | Narrow8x28 mm; Module14x35 mm; Spectrum22x1.9 mm disc; one family profile ↗ |
| Construction | Flexible biopolymer encapsulation ↗ | Flexible biopolymer encapsulation ↗ |
| Deployment | Factory-default master key for developer-installed applets ↗ | Not applicable to this category |
| Security Certification | Secure chip listed as Common Criteria EAL6+; this is not human-implant approval ↗ | Not applicable to this category |
| Function | Developer-managed contactless secure element ↗ | Not applicable to this category |
| Cryptography | Not applicable to this category | RSA, ECC, AES and3DES applets ↗ |
| Software Provisioning | Not applicable to this category | Fidesmo applet deployment ↗ |
| Payment | Not applicable to this category | Not supported by Apex Flex ↗ |
| 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.